From raw material to start concentrating photovoltaic industry to achieve
In China, the content of gallium rich today is to address is the purification process.
States should develop a variety of solar cell production of different policies. Inspiron 1525 battery，Inspiron 1526 battery
In recent years, including energy generation from solar photovoltaics, including the rapid development of new energy in the world. The most commonly used model generation solar photovoltaics using a fixed position of a large area of flat mode conversion photoelectric type, where there is a low conversion efficiency of opto-electronic production capacity of electricity is not strong gaps. Currently, the technical solution to this problem in various ways to the articles, the new concentrator photovoltaic solar cells, by researchers at the attention.
GaAs compound annual growth rate of over 7%
In cells of high concentration solar power, the worry is gallium arsenide (GaAs) solar cells. GaAs belongs to III-V compound semiconductor, its energy gap with the most appropriate to match the solar spectrum, and can heat. Compared to silicon solar cells, GaAs solar cell has better performance: first, the photoelectric conversion efficiency. Currently, the theoretical conversion efficiency of silicon cells about 23%, while the single-junction GaAs cells reached 27% conversion efficiency theory of multi-junction GaAs cell is more theoretical efficiency conversion of more than 50% (IBM data). Secondly, the temperature is good. Routine cell of gallium arsenide is better than the temperature of silicon photovoltaic cells.A1175 ，MacBook Pro 15 inch battery , There are experimental data indicate that GaAs cells under conditions of 250 ℃ can still work, but the silicon photovoltaic cells at 200 ℃ had been unable to function properly.
Currently, the world of professional production of gallium arsenide and concentration plants cells are the United States Emcore, Spectrolab (a Boeing subsidiary) and AzurSpace Germany, etc., in mainland China, Chinese Academy of Sciences Institute of Semiconductors, Chinese Academy of Sciences, Xi’an Institute of Optics and Fine Mechanics, etc. on the basis of the research has done much work, Hi-Tech Wealth, the three optoelectronic safety and other industrial enterprises in the exploration area of China to Taiwan, Han-yu, an impressive new design and other more in technology and production.
In April 2008, the production of gallium arsenide, a leading manufacturer in the world Spectrolab, won the 350-megawatt, 93 million U.S. dollars (1,000 times the condenser) in the range of power plant, which opened gallium arsenide photovoltaic cells worldwide prelude to mass production. So far, the company Spectrolab, SolFocus Inc. and EMCORE Corporation and several companies have taken the lead in Greece, Spain, has established a schedule to concentrate solar power plants running. sony vgp-bps11 , sony vgp-bpl11
In addition, according to research institutions StrategyAnalytics results of research, global industry gallium arsenide in 2007 was 35 million in 2008 increased to 3.9 billion U.S. dollars in 2009 because of the crisis Economically, the extent of decline and is expected to resume growth in 2010, annual growth rate of over 7%.
Firstly, from raw materials to make greater efforts in the industrialization
GaAs solar cells have efficiencies higher conversion should therefore be an effective way of producing solar energy. However, the industrialization process is not satisfactory. In my opinion, you can start from the following, in order to promote the industrialization process of condensing high cell of gallium arsenide.
First, the need to work on gallium raw material, while the gallium is not too global reserves, but China’s reserves are plentiful, relatively speaking, the current treatment techniques, but the problem is off question, which requires that the many scientific research institutions research, do a good job of extracting high purity gallium.
Secondly, we must do a good job of security and safety measures to increase the production of intelligent, automated plant, which reduces the production of direct contact with staff, ensuring the safety and security of production . blog
Thirdly, to make breakthroughs, to simplify the preparation process, which reduces the complexity of battery systems and lower the cost of cell preparation.
Fourthly, the media and academic institutions should act as an advertising and promotional work to raise public awareness.
Fifth, support the national policy should be detail oriented, like pairs of crystalline silicon cells, thin film batteries, fuel cells, gallium arsenide, batteries, etc. chromium telluride industrial production should be treated separately and favor competitive firms GaAs cell production, while encouraging the use of solar power plants around the gallium arsenide and new photovoltaic cells. pa3384u-1brs
