Posted by: Mr Hide in Green Energy on September 1st, 2010

While most of us have heard of solar power, the general consensus is that it would be great, but it costs too much. I know this is how I felt about it. When solar energy panels first came out this was true. Today the technology has had time to advance and many solar energy products can be set up at a more reasonable cost.

We now have options that were not available when solar energy products first came on the market. Along with the large crystalline panels of photovoltaic cells that we were first introduced to there are also thinner, more flexible thin film versions on the market. This does not necessarily mean that they are a better option; it just means that you do have options. What it does mean is that before you decide to make the investment in a solar energy system you need to do some research to see which option is the best for your energy needs and the area that you live in. That is what I will try to help you with in this article.

I will be assuming that most of us do not plan on installing these systems ourselves, so talking to the contractor you hire to install the system is always a wise choice. I will try to give you enough information so that you can ask intelligent questions when you talk to him/her. I will be looking at utility-interactive systems, ones that can hook into your current electrical supply. These are set up so that you use the energy from the system first and any supply you do not use is sent on to the grid. Keep in mind however, that there are also systems that operate completely off the grid; these are handy for remote areas that do not have electrical suppliers nearby. These systems allow you to receive a credit for the energy your system supplies to the grid, which reduces the amount you have to pay for energy you use when your system is not supplying enough, for instance during storms or at night. In some cases your energy supplier could be paying you money.

Pros and Cons

Crystalline Photovoltaic Modules:
1. 170 to 220W
2. 12% to 17% efficiency
3. 3 by 5 foot in size
4. Takes less room
5. Stabilizes immediately
6. Less output in shady areas
7. Estimated cost 3KW system 27,900

Thin Film Module:
1. 60 to 70 W
2. 6%to 8% efficiency
3. 3 by 3 foot in size
4. Takes more room for same output
5. 6 to 12 months to stabilize
6. Better output in shady areas
7. Estimated cost 3KW system 35,600

These are just some of the thing s to consider when you are trying to decide on a solar energy system. You should also be sure to check zoning laws in your area some areas do not allow solar energy panels. Talk to your contractor about the best place to put this system. We usually see them on rooftops, but if you live in an area that receives much snow in the winter you may want them accessible so that you can keep them cleaned off. I try to avoid snowy rooftops in the winter; they are bad for my health.

While these systems are not inexpensive, consider how much a new car would cost you. These systems are comparable and instead of costing you money for upkeep they would be saving you money on your energy costs. Most of these systems are also guaranteed to produce at least 80% of rated energy for 25 years. You could easily save the cost of the system in just a few years; still this is a long-term investment.

Posted by: Mr Hide in Green Energy on July 28th, 2010

If you are concerned over global warming and want to shift your house’s electrical system to a homemade renewable energy system, then you should consider using solar energy. It is clean, readily available and free. But if you just want a cheaper energy source, a homemade renewable energy system built using a do-it-yourself (DIY) solar power kit is also the answer for you. As an extra, a DIY solar power kit will also teach you how to build your own windmill to serve as a backup power source.

Before you start building your DIY solar power system, however, there is some preparatory work you need to do. First, you need to undertake a load analysis. The load analysis will establish how much electricity you use in a typical day. This information will determine how many solar power modules you need and how many batteries you should buy to store the homemade energy generated. Second, you need to undertake energy conservation measures in your household. You should realize that solar energy will not provide as much energy as being connected to a power grid, and thus, you should make your energy consumption as efficient as possible. Third, you should decide if you want a stand-alone solar energy system or if you want to remain connected to the grid. The advantage of remaining connected to the grid is that you can access your local utility’s electricity at night, when your solar arrays are not generating power. Plus, if you produce enough electricity you can sell it to the grid and reduce your energy bill.

Whether you want to save money on your electricity usage or you want to save the earth, a homemade energy system using a DIY solar power kit is the right solution for you.

Posted by: Mr Hide in Green Energy on July 28th, 2010

Active solar energy has become the solution to the world’s global warming crises. As the world advances technologically, there has been an urgent need for effective lighting and heating systems. 

If you are one person who has decided to use solar energy for heating and lighting then you have made a wise decision. Solar energy helps you to live with the respect for the environment. Let us summarise questions that people sometimes ask. 

How you can benefit from the use of active solar energy.  

The use of solar energy helps you cut down the cost of using fossil fuels such as gas and oil. The solar energy is eco-friendly and posses no threat to the health of humans. 

Why should one choose active solar energy for heating and lighting space for home?  

There are quite a number of benefits of using solar energy systems. 

Solar energy is eco-friendly, meaning it does not in anyway pose a threat to the state of the environment. The use of solar energy does not lead to the disposal of harmful gases that destroy the ozone layer such as in fossil fuels. Solar energy systems are very easy to maintain and cost effective, you will not lose much money when it comes to maintenance and running costs. The use of solar energy for heating and lighting space at home helps cut down your heating and lighting budget. Solar energy does not run out hence you do not suffer escalating prices of fuels due to unavailability.

 

Solar energy gives you many benefits when it comes to the running of heating and lighting systems at home. All this can fully be understood and planned using the easy to use solar energy DIY Guide. This detailed guide helps you to fully understand the use of active solar energy systems and their installation. Get your hands on it today!

Posted by: Mr Hide in Green Energy on July 28th, 2010

2 Sorts of Renewable Energy DIY Kits

A Renewable energy Do It Yourself Energy kit can do a considerable amount for individuals who are searching for ways to cut back on power cost. The abundance of these kits could not have come in a more correct time. The prices of non-renewable fuel notably oil have gotten out of hand. Recently, more individuals are starting to become knowledgeable of the negative impact of our continuous over-dependence on this kind of fuels on the environment. They’d also such as to perform their share in making certain that factors do not get more difficult.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Why Do We Need To Use Solar Power?

There are truly a considerable amount of energy sources. Endless supply of energy can come from water, wind, and the heat of the sun. The technology for retrieving power from them is not even new. Nevertheless with power producers targeted on non-renewable energy sources, the promise of solar and wind power haven’t essentially been exploited.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Is It Expensive?

Setting up solar power and windmill generators to energise homes used to be not practical. Solar power units price from 3,000 bucks and above whereas windmill generators price round 10,000 dollars. Today, but, individuals can build their own at much less charges – because of renewable energy DIY kits.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Which Energy Source Should I Use?

There are at this point 2 types of alternative energy sources that have aroused the interest of individuals: solar and wind power. Enterprising corporations and people taking advantage of the technology accumulated over the decades on these different energy sources have created solar and wind power Do-it-yourself kits.

People have a alternative of either making a windmill power generator or a solar power generator, or they are able to even build both. They will be able to complement each other to take  your home completely away from the power grid, so decreasing power costs by as much as 80%.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Wind Kits

The technology involved in capturing solar and wind power is straightforward however individuals will steer clear of a considerable amount of errors by employing renewable energy DIY kits.  There is the Windmill Electricity Kit and Solar Power Kits.

The fundamental element of a windmill power unit is the windmill with rotor blades, electric cable, and a transformer, which store and save the energy produced by the windmill. The Windmill Electricity Kit provides in-depth easy-to-follow instructions on how to build the wind power unit.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Solar Kits

Solar power energy kits instruct individuals how to build their own personal solar panels that traps the heat of the sun as well as how to transform it into electrical power. Some instruct the whole thing, from making solar panels to reworking into electricity.

Do It Yourself Energy kit: Wind And Solar Power Handbook Guide: Conclusion

People have a considerable amount of ways of decreasing their electric bills and at the same time participate in caring for the environment. You simply need to browse the Net for the best renewable Do It Yourself Energy kit.

Posted by: Mr Hide in Green Energy on July 28th, 2010

Used primarily for providing hot water, solar energy  has been used in the home for nearly half a century. Although the initial cost of these systems was once considered to be expensive, the rewards provided by tapping into a source of free energy like the sun are now well documented and appreciated by hundreds of thousands of solar hot water customers around the world.


The benefit of energy from the sun is that it is clean, cheap to maintain and is a completely green renewable energy source. So that is the solar advantage! Solar energy is free from the sun. The use of solar energy reduces our dependence on non-renewable resources such as oil and gas from our fragile planet which cannot be replaced. Solar energy is truly available for everyone who wishes to tap into it.


With the development of new technologies, a revolution in home electricity generation is now in its embryonic stages. Using solar panels similar to that used in solar water heaters but consisting of photovoltaic cells (when sunlight falls on these cells, it is transformed into electricity) it is now possible to generate free electricity from the sun’s energy. Furthermore, it is now possible to reduce the costs of implementing one of these systems at your home or business by building your own DIY solar panels.


When compared with the expense of buying pre-made solar panels, having access to accurate, tested designs presented in a simple and direct manner can provide significant savings. Some pre-made systems can take ten years or more to pay for themselves which makes the upfront cost somewhat prohibitive for many people in these tough economic times.


Of course, the beauty of any do it yourself project is not restricted to saving money. By building your own system, it can be custom-made to perfectly match your exact requirements. Of course, there is also a sense of triumph when a scheme is completed- even more so when your family receives an immediate  advantage through reduced energy bills for as long as the equipment functions.


Some of the largest companies in the world manufacture the vital components included in DIY solar panel kits. You can also locate complete plans and designs to construct the whole system from scratch. Its really a matter of how brave you are and even if you are not a skilled handyperson, many of the plans available are suitable for the greenhorn. Another bonus feature of taking the diy route is the flexibility that these expandable systems offer. By starting off small, you can keep the costs down and add more generating power when you can afford to.


If you are keen to reduce power costs, explore the options because of the number of DIY solar panels available. Like any home project, you want quality plans with reasonably achievable results. Whenever I fabricate something, I do my research and ensure that I have the skills and tools which will be needed. When we talk about home energy, its really a no-brainer, anyone who believes that the price of electricity is going to reduce is deluding themselves. It may also be possible in your area to feed electricity back into the electricity grid creating even further reductions in your power bills. Obviously these sorts of home systems will be a little more complex than the basic types however I have seen these systems working and they are nowhere near as complicated as you may think.

Posted by: Mr Hide in Green Energy on July 28th, 2010

1. INTRODUCTION
In most people’s minds, fujitsu T4220 Battery electricity is a clean source of energy when using lamps, televisions, refrigerators, air conditioners and other appliances, perhaps we did not realize the power of the damage to the environment, the actual coal-fired power generation on the environment damage is significant. China is now the world’s No. powers of greenhouse gas emissions, while the conventional electricity production using coal, oil, natural gas, power generation, has become China’s carbon dioxide and other greenhouse gases, one of the major sources of emissions, but also a large number of coal-burning emissions of harmful gases such as sulfur dioxide . When we use conventional electricity, we are in fact an indirect polluters, because we only created the demand for electricity supply, and thus indirectly on the environment caused by pollution. At the same time we are also victims of pollution.

The 21st century, mankind will face the realization of economic and social sustainable development fujitsu lifebook T5010 Battery, major challenges with limited resources and environmental protection under the stringent requirements of the dual constraints of economic development has become the world’s hot spots. The energy issue will be more prominent. Energy shortages in most countries of the world’s shortage of energy supply can not meet their economic development needs. In the long run, the world’s proven oil reserves can only be used in 2020, natural gas can only last until 2040 or so, even if the reserves are abundant coal resources can only be maintained Ersanbainian.

As the burning of coal, oil and other fossil fuels, every year hundreds of thousands of tons of sulfur and other harmful substances thrown the sky, the atmosphere has been seriously polluted the environment, directly affecting the health of residents and quality of life; the formation of acid rain in some areas, serious pollution of soil and water. The use of fossil fuels produces large amounts of greenhouse gases caused by the greenhouse effect; caused by global climate change. This issue has been referred to the global agenda, the relevant international organizations have held many meetings and restrict FPCBP95 , FPCBP95ap , FPCBP155 CO2 and other greenhouse gas emissions. Thus, in addressing the energy problems of mankind to achieve sustainable development can only rely on scientific and technological progress, large scale development and utilization of renewable and clean energy.

Solar energy has the reserves of the “unlimited nature of the” Solar radiation energy per second is about 1.6 × 1023KW, within one year of the total solar energy reaching the Earth’s surface of standard coal equivalent to a total of about 1.892 × 1013 100 billion tons, is the world’s proven reserves of primary energy ten thousand times. Relative to the finite nature of conventional energy, solar energy has the reserves of the “unlimited nature of” inexhaustible. For the other sources of energy, the solar energy for most areas on the planet with the existence of universality, capable of being drawn. This is the conventional energy-deficient countries and regions that solve the energy issues of the prospects. The use of solar energy as clean wind energy, tidal energy and other clean vgp-bps2 energy sources, like its development and utilization of time does not produce almost no pollution. The economics can be used two ways to see the economics of solar energy utilization. First, solar energy inexhaustible, but also in receiving solar energy without the imposition of any “tax” can be anywhere access; 2 in the current level of technological development, the utilization of solar energy is not only possible and feasible. In view of this, solar energy will convert the energy structure in the world to assume a heavy responsibility, an ideal alternative energy sources.

2. Solar Cells
No. 1 50’s the advent of practical silicon solar cells, photovoltaic technology, opened the curtain, but also opened a new chapter for human use of solar energy. Since the solar cells into space 60 years, since the 70’s into the ground application, solar photovoltaic technology is developing rapidly. Since 1990, the global market for solar photovoltaic power generation sales to an annual average rate of 16% increments, the vgp-bps2a , vgp-bps2b current total generating capacity reached 800MW, equivalent to 20 million U.S. households annual energy consumption. 1997, the worldwide sales of solar cells increased by 40%, has become the world’s fastest-growing source of energy.

2.1 The impact of photovoltaic technology issues
Large-scale application of photovoltaic cells that affect the main obstacle is its high manufacturing costs. In many power generation technologies, solar PV is still the most expensive a form, therefore, the development of power generation technology, the main objective of the sun through the improvement of existing manufacturing processes, design of new battery structure, and development of novel battery materials to reduce manufacturing costs, etc. improve the photoelectric conversion efficiency. In recent years, show the steady development of photovoltaic industry trends, developments of the features are vgp-bps2c , VGP-BPL2 : increased production, conversion efficiency, cost reduction, applications are expanding. In 1998, the world’s solar cell output for more than 150MW, is more than double the 1994 output. Monocrystalline silicon solar cell, the average efficiency of 15%, laboratory efficiency reached 24.4%; polycrystalline silicon solar cell efficiency up to 14%, maximum efficiency of 19.8%; the stability of amorphous silicon solar cell efficiency, single-junction 6 ~ 9% laboratory of 12% maximum efficiency, multi-junction cells of 8 ~ 10%, the highest efficiency of 11.83% lab.

Recently, the Swiss Federal Institute of Technology M · Gretzer developed a titanium dioxide solar cells, its photoelectric conversion rate as high as 33%, and successfully introduced a amorphous organic materials to replace the electrolyte, so that it’s cheaper than a similar a large glass of your not much better and more convenient to use. It is expected that as technology advances and market expansion, the cost of photovoltaic SONY VGP-BPL2C cells would be substantially reduced. Can be drawn, in 2010, due to the decline in the cost of solar cells is expected to make photovoltaic technology into large-scale development period.

2.2 PV development of new technologies
In recent years, around the solar battery materials, conversion efficiency and stability issues such as photovoltaic technology has developed rapidly. Crystalline silicon solar cell research is high-efficiency monocrystalline silicon cells and low-cost polycrystalline silicon cells. Restrictions on single crystal silicon solar cell conversion efficiency of the main technical vgp-bps8 , vgp-bps8a barriers are: the surface grating cell shading effects; surface light reflection loss; light conduction losses; within the compound losses; surface recombination losses.

To solve these problems, in recent years developed a number of new technologies, mainly include: single-layer anti-reflection film; laser engraved groove buried gate line technology; Suede technologies; back point-contact electrode to overcome the surface of gate line shading issues; efficient back reflector technology ; optical absorption techniques. As these new technologies invented many new types of batteries, which greatly improved the conversion efficiency of solar vgp-bps8b cells, such as laser engraving tank buried gate lines, and new technologies, the high purification of crystalline silicon solar cells conversion efficiency of up to 24.4%.

MAnother characteristic of the development of photovoltaic technology is the thin-film solar cells made significant progress in a variety of new solar cells are emerging. Of crystalline silicon solar cell conversion efficiency may be high, but its cost was difficult to significant decline, while the thin-film solar cells to lower manufacturing costs has a very wide attractive prospect. Some years ago, the use of multi-layer film vgp-bpl8 structure, low-grade silicon material has made the cost of solar cells plunged 80 percent, is expected to 1O years to make the technology commercially.

And efficient development of new solar cell technology is to reduce the cost of photovoltaic cells a viable way to another in recent years, some new high-performance batteries continue to come out:

Copper selenide steel (CUINSE2, CIS) thin-film solar vgp-bpl8a cells: 1974 CIS batteries in the United States came in 1993, the U.S. National Renewable Energy Laboratory to make it the intrinsic conversion efficiency of 16.7%, due to CIS solar cells with a low cost (film Only silicon thickness of 1 / 100), can increase the band gap increase conversion efficiency (30% of the theoretical value of single crystal, polycrystalline 24%), there is no light-induced decline down, anti-radiation can be good, etc., all countries are competing to research and development, and actively explore the large-scale application of mass production techniques.

Silicon – Si tandem solar cell structure: Adoption of a-Si and a narrow band gap materials, cascading, is the effective use of long-wave sunlight, increased conversion efficiency of amorphous silicon solar cells a good way. It has low cost, low energy consumption, process a vgp-bps9 , vgp-bps9/b small, cheap and efficient and so on.

Chemical beam epitaxy (CBE) technology to produce multi-junction III-V compound solar cells: III-V compound (eg, GAAS, INP) has a high photoelectric conversion efficiency, these materials can match the multi-layer solar cell conversion efficiency to 35% or more. Multi-layer structure which is easy to use CBE law making, and can reduce the cost, ultra-efficient.

Large-scale photovoltaic nano-batteries: 1991, Switzerland M. GRATZEL research team led by Dr., aqueous solution for nano-TIO2 powder coating, and containing a variety of transition metal organic dyes and glass and other materials to produce ceramic pigments sensitive to solar cells, referred to as nano-battery. Calculations show that the conversion efficiency can be manufactured by at least 12% of low-cost vgp-bps9/s , vgp-bps9a batteries. The battery is used for large area of the outer surface of the building provides a broad prospect.

3. Development of solar cells
The progress of solar cells can be from their performance indicators, output, prices, etc. to assess. Performance solar cells have open circuit voltage, short-circuit current, fill factor, photoelectric conversion efficiency over the top, of which the most important indicator is the photoelectric conversion efficiency is about the efficiency of light energy into electrical energy.

Solar cell silicon solar cells and the main can be divided into two major categories vgp-bps9a/b of compound semiconductor solar cells. The following are described separately.

3.1 silicon solar cells
Silicon is the second most abundant earth element, but also non-toxic, with its production of high efficiency solar cells, so it is the most suitable for production of solar cell semiconductor material. In 1997, the world’s solar cell output of about 120MW, of which more than 99% of silicon solar cells. In silicon solar cells can be divided into the silicon, polycrystalline silicon and amorphous silicon solar vgp-bpl9 , vgp-bps10 cells three categories.

1. Monocrystalline silicon and polycrystalline silicon solar cells
Monocrystalline silicon and polycrystalline silicon solar cell is a P-type (or n-type) silicon substrate through the phosphorus (or boron) made the proliferation of P / N junction and the system gets. Monocrystalline silicon solar cell, high efficiency, long life, excellent performance, but the cost is high, and limited to the single crystal size, single cell area is difficult to do large for the relatively large diameter of 10 ~ 20cm of the wafer. Cast polycrystalline silicon cell is made of polycrystalline silicon ingot slicing, cost less than the monocrystalline silicon cells, single cells can also be done relatively vgp-bps10/b , vgp-bps10/s large (for example, 30cm × 30cm square pieces), but due to complex factors such as grain boundaries exist, less efficient than silicon cells.

Now, monocrystalline silicon and polycrystalline silicon battery research work focused on the following aspects:
(1) a buried layer of electrode surface passivation, secret back-gate electric field process optimization and contact electrodes to reduce the photo-carrier compound losses, improve the carrier collection efficiency, thereby enhancing the efficiency of solar cells. University of South Wales, Australia, the pro-Green laboratory using these methods, has created the current silicon solar cells under AM1.5 world-recognized 24% of the maximum vgp-bps10a , vgp-bps10a/befficiency.

(2) with excellent anti-Chinese shooting film, embossing the surface, high reverse back electrodes way to reduce light reflection and transmission losses, to improve the efficiency of solar cells.

(3) directional solidification method growth of polycrystalline silicon ingot casting instead of silicon, the estimated positive back electrode of silver paste, aluminum paste screen-printing technology to improve the silicon cutting, grinding, polishing and other processes, doing everything possible to reduce costs to improve the efficiency of solar cells. Currently the largest weight of vgp-bpl10 silicon ingot has reached more than 270 kilograms.

(4) thin-film silicon cells are also strong research and development. Calculations show that if in metal, ceramics, glass substrates were prepared by low-cost, thickness 30 ~ 50?m large area of high-quality polycrystalline silicon thin film, then the solar cell manufacturing process can be further simplified, costs can be significantly reduced. Therefore, polycrystalline silicon thin-film solar cells is becoming a hotspot.

Single crystal and polycrystalline silicon solar cells is now the world’s annual output has reached approximately 120MW. The highest efficiency silicon solar cells up to 18% ~ 24%. Aviation and aerospace, high-quality solar cells used in the AMO under the conditions of efficiency is about 13.5% ~ 18%, while the ground used for the mass production of solar cells efficiency under AM1 mostly in the 11% ~ 18% sony PCGA-BP1N , sony PCGA-BP2E or so.

2. Amorphous silicon solar cells
As the sunlight absorption coefficient of amorphous silicon on the large, and therefore non-chang thin silicon solar cells can be done, usually silicon film thickness is only 1-2?m, is a monocrystalline silicon or polycrystalline silicon cells thickness (0.5mm or so) 1 / 500 Therefore, resource consumption, less production of amorphous silicon cells.

Amorphous silicon solar cell is generally used methods such as high-frequency glow discharge to make silane (SiH4) gas decomposition of deposits made of. Deposition temperature is low due to decomposition (200 ? or so), so less energy consumption when production cost is relatively low, and this method is suitable for mass production, single cell area could have done much (for example, 0.5mX1.0m), neat beautiful. Another characteristic of sony VGP-BP2EA , sony PCGA-BP2NX amorphous silicon cells is a Blu-ray to respond to good, in general, even under fluorescent light can work, so it is widely used as electronic calculators and palm computer’s power, with an estimated usage of about 10 million per month and a . These advantages, so that amorphous silicon solar cells in the last 10 years to get the rapid pace of development, and in 1997 the world production is estimated to have reached more than 30MW.

Si because of its instability and internal structure of a large number of hydrogen atoms of deposit, with light fatigue effect (Staebler Wronski effect), so the stability of amorphous silicon solar cells after long-term problems. Over the past 10 years, after efforts to study, while improving, but not completely solve the problem, so as the power supply, not volume.

Amorphous silicon in crystalline silicon due to the lack of atomic arrangement in the rules of nature deficit. So simple a-Si p / n junction, the tunneling current is often dominant to render the yin properties, without rectification characteristics, would be unable to produce solar sony PCGA-BP2R , sony PCGA-BP2S cells. To obtain a good diode rectification characteristics, must be in the p layer and n-layer was inserted between the thick intrinsic layer i, in order to curb the tunneling current, so amorphous silicon solar cells typically have a pin structure. In order to improve

Efficiency and to improve stability, and sometimes made into a pin / pin / pin structure such as multi-layer laminated batteries, or insert some buffer layer.

Amorphous silicon solar cell research, are now mainly focused on improving the amorphous nature of film itself, in order to reduce defect density, precision design layers the thickness of the battery structure and control to improve the interface between the layers of the state, in order to achieve high efficiency and high stability.

The current single-junction amorphous silicon cells are able to achieve maximum PCGA-BP2SA , sony PCGA-BP2T efficiency of about 14.6%, a large number of production can reach 8% ~ 10%. The maximum efficiency of the battery stack can reach 21.0%.

3.2 compound semiconductor solar cell
In the compound semiconductor solar cells, the current research and application are more CaAs, InP, CuInSe2 and CdTe solar cells. As the compound semiconductor or less toxic, easy to cause environmental pollution, therefore low production PCGA-BP2V , sony PCGA-BP3T levels are often used in some special occasions.

1. GaAs solar cells
Potassium arsenide (GaAs) solar cells can be high efficiency, maximum efficiency laboratory has reached more than 24%, the general efficiency of space solar cells are used in 18% ~ 19.5% for. GaAs solar cells is currently mostly used liquid phase epitaxy method or metal organic chemical vapor deposition (MOCVD) technology to prepare, so costs are high, production is limited, reduce costs and increase productivity has become a focus. GaAs solar cells is currently mainly used in spacecraft.

At present, single crystal silicon film preparation technology is mature, low cost, and therefore silicon substrates, to MOCVD technology for the manufacturing of heteroepitaxial GaAs solar cells to reduce the cost of GaAs solar cells promising approach. At present, the efficiency of the battery has reached 20%. However, GaAs and Si crystal lattice constant related to a larger conducting guided quality epitaxial growth, the epitaxial PCGA-BP4V , sony PCGA-BP505 layer lattice mismatch serious, difficult to obtain high-quality epitaxial layer. To do this often begin by growing a layer of Si substrate with the GaAs lattice constant difference between the smaller Ge crystals as buffer layer, and then the growth of GaAs epitaxial layer, such Si / Ge / GaAs heteroepitaxial structure of the battery is constantly developing . Control the thickness of layers, appropriate changes in architecture, which allows sunlight photon energy of various wavelengths have been used effectively to present multi-layer structure of GaAs-based solar cell efficiency of nearly 40%.

2. InP solar cells: indium phosphide solar cells have a particularly good anti-radiation performance, so attention in space applications, the current efficiency of the battery has reached 17% ~ 19%.

3.CuInSe2 polycrystalline thin-film solar cells: the efficiency of the VGP-BPL1 , sony VGP-BPL4 battery has reached about 17.6%, and stable performance, as the polycrystalline thin-film batteries are very promising. But more complex components, manufacturing process repeatability is poor, affecting its development.

In addition, Cds / CdTe solar cell efficiency has reached 15.8%, but this battery-toxic and easy to result in environmental pollution.

4. The application of solar cells
Communications satellites are usually square to the various systems using solar power, and battery charging, water in the stars during the battery power to the satellite. In the past, extensive use of solar silicon photovoltaic cells square. At present, more advanced silicon photovoltaic conversion efficiency of up to 15%, but the battery can no longer meet the requirements of a large platform, now under development and the use of GaAs solar cells. The current single-junction GaAs solar cell conversion efficiency up to 18% in general, dual-junction GaAs solar cells up to 21-23%. This battery is not only efficient, but VGP-BPL4A , sony VGP-BPL5A also high temperature resistance, space radiation. Are now developing multi-junction GaAs solar cell, its conversion efficiency is expected to reach 30%. In order to further increase the efficiency of solar cell matrix, are now studying the use of solar concentrator panels, to increase the amount of solar energy, so that the solar constant increased to more than one. Over the past communications satellite battery commonly used nickel-cadmium batteries, with the increasing power of satellite, is being developed using nickel-metal hydride batteries. Ni-MH battery than the nickel-cadmium batteries depth of discharge depth, than the large capacity.

In order to “Deep Space 1? interplanetary probe become a reality, Air Force Research Laboratory made six key technologies, which are:

1. Lightweight solar phalanx. The future of solar panels using composite structures, connecting the various parts of the cable line will be eliminated, solar panels using plastic hinge. The use of thin-film solar cells VGP-BPL11 , sony VGP-BPL12, energy supply per kg weight of 116 watts, while the existing system for 40-50 watts. Multi-junction thin-film photovoltaic solar battery easy to start on the square in orbit. Light “smart” structure can be automated to eliminate vibration and thermal effects.

2. Flexible Integrated power supply and signal systems. By vacuum coating technology, so that battery and flexible thin-film battery components and barrier layer photovoltaic cells connected to form a multi-satellite buses. Flexible battery installed in the other sub-systems around.

3. Multifunctional structure.

4. Ultra-high density circuits.

5. Micro-electro-mechanical systems.

6. Light large optical system.

The United States October 24, 1998 launched the “Deep Space 1? interplanetary probe. Set-type solar cell using optical experiments. This solar cell matrix is actually only 13% of the area is coated with solar film, also with a 720 surface Filler lens, using a linear array of lenses Filler had gathered all the sunlight to these batteries. Since the battery is low, and the VGP-BPL13 , sony VGP-BPL14 battery light lens off than glass, so solar cells and reduce the weight matrix, and prices have changed cheaper. “Deep Space 1,” 2.6-kilowatt solar phalanx has four panels, the size of 1.1mx1.6m, total weight 58 kg. To enhance the capacity of radiation protection, the battery area on the thicker glass could have been done. There are two solar cells themselves, they are stacked together, can be 0.4?m ~ 0.85?m within the broadband spectrum of the energy conversion efficiency of 22% or more is expected. The disadvantage of this solar cell refers to a little square a little bit of error, capacity will be greatly inspiron 6000 battery reduced.

Posted by: Mr Hide in Green Energy on July 28th, 2010

 Renewable energy enthusiasts  explains how to make solar panels. Follow his manuals and videos and You Can Make Your Own Diy Solar Power Panel Generator within weeks and start building your complete home solar power system – green alternative energy solution

 Going green is the growing trend with homeowners as they become aware of the impact they have on our environment.

Answer this question – Do you want to save thousands off the cost of solar panels?
Of course you do!

You can now make solar panels at home! You have probably read about it or seen it on TV, but have you tried it yourself?

If you are tired of paying for electricity and want to reduce your power bill, then this is definitely a great opportunity to discover home alternative energy.

Seriously, you can generate your own power?

“I just made my own solar panel. It was so simple and looks just like a bought panel. The first month after I installed my first solar panel generator my electric bill was reduced by about $40 dollars. I can’t believe I done this  – I ‘ m so glad.”

Commercial Solar Panel systems costs can exceed $4K!  Not too many homeowners have that kind of expendable money nor do they want to spend that amount of money on residential solar panels that take years to get a return from the investment

You can start on your home solar panel system setup for about $200! Not only that you IMMEDIATELY save money!

Bret wants to show you how to go green and save thousands of dollars at the same time.

Solar and Wind Energy kit includes solar power, wind turbines, complete home power systems. Instructional solar panel guide to help you save money, keep in mind the number one goal for renewable energy is to save our planet.

 Facts About diy Solar Panels –

You are going to save money. How much you save is up to you!

It’s Clean, Quiet, & Easy to use.
Solar panels consume no fuel and give off no waste and are therefore clean. There are no moving parts so there is no mechanical noise being produced.

It Maximizes Battery Life.
Solar panels generate pure D.C. electricity to charge the systems batteries.

Electrical Independence!

Solar Panels offer Low Maintenance
Simply keep the surface of the panels clean as needed.

Solar Panels are Safe and Reliable.

If you are interested in learning exactly how to generate power and reduce your bill then this is the perfect resource for you! With the ever increasing costs of living, there is no better time than right now to stop throwing money out the window and start generating our own electricity.

Over the last few years I have figured out how to significantly reduce the cost of solar panels making it more affordable for the average home owner just like you.

Now you can build a single panel or a complete array of panels to power your home for a fraction of retail cost.

I’m going to be your “solar mentor” and show you step-by-step how to make a solar panel. I’ll also teach you my other secrets to renewable energy in an easy to follow format.

Posted by: Mr Hide in Green Energy on July 28th, 2010

Getting home solar electricity is more affordable today than 10 years ago.  In fact, many state governments are currently offering tax rebates to persons that choose to convert to home solar electricity.  If installing a photovoltaic system to supply your home solar electricity is too far out of your financial abilities, there are also programs available to purchase your utilities from an accredited green energy supplier.  Green energy suppliers offer only utilities fueled by renewable resources, such as solar electricity, hydroelectricity and wind generated electricity.  However, if you made the decision to switch to solar electricity for your home it is important to determine your electricity needs before you start shopping.

The first thing to determine is how much power you will need from your home solar electricity system.  Different arrays and solar panel set-ups offer different wattage outputs.  Take the time to determine your average daily electricity usage.  You want to achieve a number that includes the entire year and affords for the different amount of energy used during winter and summer months (more lights, heaters, air conditioners).  

When shopping for the right photovoltaic system to supply your home solar electricity definitely research the quality of the product.  A product offering 13% efficiency and a lifetime warranty will be far more valuable than the panel offering 15% efficiency and a one-year warranty.  Ask neighbors, friends and even strangers currently using home solar electricity, to learn more about the differences in systems.  Sufficient time should also be spent interviewing installers and researching manufacturers as well.

A final decision needs to be made as to what kind of system you would like to use to supply your home solar electricity.  There are generally three types of solar panel systems used to supply home solar electricity.  The first type is a grid-tied system in which your solar panels are tied into your current power meter.  You are using both electricity supplied by your panels and your supply is then backed by electricity from your electric company.  The second available solar panel system for supplying home solar electricity is a grid-tie with battery backup.  With this system you are collecting electricity from you panels, filling your batteries for emergencies and then the excess is sent back to the electric company through your meter.  The final system is a stand-alone system.  Very similar to the grid-tied system with battery backup except that you are completely disconnected or maybe never connected to a major utility provider for your area.  

Once you educate yourself on providing your home solar electricity, you are probably ready to start shopping.  Remember that converting to home solar electricity is an investment and you will reap the rewards over time.  And don’t forget the pride you will have with reducing your carbon footprint by converting to home solar electricity.

Posted by: Mr Hide in Green Energy on July 28th, 2010

Nowadays, solar power have become more affordable. That makes it a viable alternative energy option for homeowners who would like to save their electric bills each month and for the environmentally conscious who would like to take the financial benefit. Actually, the advantages of energy from the sun focus on global warming and independence from fossil fuels.

Making your own solar and wind power for less than $200

If you haven’t experience about the solar electric world before, you will probably be amazing what precisely solar panels are? People know solar panels as they are photovoltaic panels. Photovoltaic means electricity from the sun. Solar energy panels collect protons from the sun, which replace neutrons, and produce a flow of electrons or electricity. An inverter switches the power generated by the solar panels from AC to DC current making it be a direct electricity supply which is used in home.

You can use energy from the sun to make your pool, workshop tools, greenhouse lights and fans heat. Also you can use it depending on you personal electric usage, your whole business or home. The lifetime of most solar energy panels is 30-40years with little to no maintenance needs. The energy savings and utilities cost each month over the life-span of solar energy panels is enough to justify the initial cost of the system. That will make a larger number of users express interest and make the opportunity to solar energy panels or other renewable resources.

Making your own solar and wind power for less than $200

You can purchase solar power panels for small applications at your local hardware stores. These small versions are ideal for small water pumps, outdoor lighting, and other outdoor tools. If you are purchasing solar power panels for your home or business, it would be best to find out a local retailer of solar panels or a local green energy retailer in your area. Moreover, a lot of information about different solar energy providers is also available.

The first step to be independence from fossil fuel is making an understanding of the value of solar energy. As our traditional energy resources are falling into exhaustion, it is the best time to consider to solar power for your home or business nowadays.

Making your own solar and wind power for less than $200

Posted by: Mr Hide in Green Energy on July 28th, 2010

Climate change, the price of oil, decline of natural resources – all of these are playing into the worldwide effort to develop sustainable, “green” energy. One effort that’s growing in popularity is a trend toward learning how to build solar panels to generate electricity at home.

Solar panels offers many environmental advantages. First and foremost, it’s a renewal resource, since it generates electricity from sunlight. Thanks to ongoing technology improvements in solar power, it has become much more economical and practical. Another big plus to solar power is that it doesn’t cause pollution, like the emissions from coal-burning power plants, or the nuclear waste from nuclear power plants.

There is a disadvantage to solar panels, and it’s a simple one: no sunshine, no power. It’s possible to store solar-powered electricity in batteries, but that’s not an efficient process at present. Thus solar power works well in regions that get lots of sunshine, and less well in regions that typically have lots of rain. Even in cloudy regions, though, it’s still possible to generate electricity through solar power some of the time.

That’s why there’s so much interest today in learning how to build and install your own solar panels for electricity. Building solar panels can be an enjoyable project for the entire family. Making solar panels yourself can give you an immense sense of personal satisfaction as well as the knowledge that you’re doing something good for the environment.

Even if you’ve never done much in the way of home improvement before, web sites such as Earth 4 Energy, Power 4 Home and Homemade Energy.Com teach you how to build solar panels step by step for as little as $200. That’s much more economical than commercially installed solar power systems costing thousands of dollars.

Do something good for your family, your home and Mother Earth by learning how to build your own solar panels. Sustainable solar power offers so much benefit, and will save you money month after month after month….

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