Development and application of solar cells-Power Kingdom

International at present of the extensive use of batteries to monocrystalline silicon solar cell, polycrystalline silicon solar cells and amorphous silicon solar battery three, the three battery about each accounted for one-third of the market, there are seven solar cell production line, mainly is the production of monocrystalline silicon and amorphous silicon solar battery, polycrystalline silicon solar cell has a small amount of production. The efficiency of monocrystalline silicon solar cell production in China in 12 - 13%, polycrystalline silicon solar cell in 10%, amorphous silicon solar cells in 5 - 6%. Crystalline silicon solar cell is on the research towards the direction of high efficiency, thin, large area development. Crystalline silicon solar cell components of 1995, China's reference price is 45 yuan/tile, amorphous silicon solar battery components for 25 yuan/watt, still several times for conventional energy, but in regions without electricity and pull not convenient place, has produced good economic benefit. Solar battery is also called a photovoltaic cell, is a kind of can effectively absorb solar radiant energy, and make it into a power semiconductor device. It may be separately as a light detection components, such as used in the camera, mainly through the series and parallel, in order to obtain the required voltage and current to used as power supply. The appearance of the solar cell as a thin card or a piece of thin glass, look different with ordinary battery, it can store electricity itself, is not to have when the light is not power, if want to use it at night, will be used with battery. The area of the solar cell in strong sunlight about 2 per 100 ㎝ produce 1 watts of electricity, we often say that 1 KWH is 1 kilowatt hour, which is 1 kw this battery work for 1 hour to produce 1 KWH. Solar photovoltaic power generation, can be regarded as by far the most beautiful, the oldest and the most reliable power generation technology. Compared with solar power, it is the other related to semiconductor devices, no moving parts, and no flow of working medium, therefore, avoids the problem of mechanical maintenance and working medium corrosion, is reliable for the sustainable development of renewable energy and energy. 12 v12ah solar battery the development of silicon solar cell, began in 1954, the United States bell successfully trial-produced institute, the next year was used as the power of telecommunications equipment, and by the United States for the first time in 1958 and is applied to & other; Pioneer 1 & throughout; The man-made satellite. The universe development greatly promote the development of the solar cell. At the same time, the ground USES solar cell research has been carried out, especially the energy crisis in 1973, and greatly accelerated the development of solar cells on the ground. In many countries for the development and utilization of solar energy battery, for the sun the study spent a considerable amount of money. So far thousands of aircraft flying in space, most of them are equipped with solar battery system. The first artificial satellite to heaven, and is the starting point of pv technology development and utilization, after nearly 50 years of development, it has formed a new photovoltaic science and photovoltaic engineering. Whether it is in the application of space flight, or as an application of ground power system from the development speed, technical maturity and application fields, photovoltaic technology is the most outstanding in the new energy. Solar cells as a potential renewable energy, on the ground gradually promoted. The cost and price of solar cell are also dropped year by year, for many years has been to a 10 - to solar cell production The growth rate of 25% on the increase. World production of solar energy battery components of 70 mw in 1990 ( Mw) , our country is 1. 2 mw, is mainly used in the sun a good remote areas. By 2001 the world's solar cell production of 350 mw, the actual production of our solar battery has reached 4. 5 mw, the total installed capacity has more than 20 mw. Our country is a developing country, vast territory, there are many outlying provinces and economic less developed areas. According to statistics, at present our country still has 7 million households ( A population of 28 million) , there is no access to electricity, 60% of the electricity county severe power shortage. These areas in the short term can not be solved by conventional electricity power, photovoltaic power generation is the ideal way to solve the scattered farmers and herdsmen electricity, the potential market is enormous. Photovoltaic (pv) power generation has many advantages: such as: safe and reliable, no noise, no pollution, energy widely available, is not subject to regional restriction, do not need to consume fuel, no mechanical moving parts, low failure rate, convenient maintenance, can unattended, website building cycle short, size of casual, don't need to rack transmission lines, can be easily combined with buildings, etc. , these advantages are less than other power generation methods.