太阳能与太阳能电池基础简介（Introduction to solar and solar cells）.docVIP

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太阳能与太阳能电池基础简介（Introduction to solar and solar cells）.doc

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太阳能与太阳能电池基础简介（Introduction to solar and solar cells）

太阳能与太阳能电池基础简介（Introduction to solar and solar cells） The basics of solar and solar cells,.Txt2008, are abnormal, and everything is out of order! At this critical moment, China men to prove to the world: China men or normal! This article is contributed by superdream82 DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Solar energy: solar energy generally refers to the radiant energy of the sun. Inside the sun, the nuclear reaction from hydrogen to helium constantly releases enormous energy and radiates energy to the universe, which is solar energy. The radiation power from the sun to space is 3.8 * 1023kW radiation, of which 2 billion of the earths atmosphere reaches the earths atmosphere. Solar energy reaching the earths atmosphere, 30% atmosphere reflectance, 23% is absorbed by the atmosphere, the rest to reach the earths surface, its power is 800000 million kW, that is to say a second exposure to the suns energy on earth is equivalent to 5 million tons of coal combustion heat release. Solar energy in the broad sense is the source of many energy sources on earth, such as wind energy, chemical energy, water potential energy, and so on. Solar energy in the narrow sense is limited to the direct conversion of solar radiation, light and electricity, photoelectricity and photochemistry. What are solar cells: solar cells are devices that convert light energy into electrical energy directly through photovoltaic or photochemical effects. The first solar cell was prepared by Charles Fritts in 1883, and Charles was coated with a very thin gold layer on a germanium semiconductor to form a semiconductor metal junction. The device was only 1% efficient. With the development of semiconductor technology, the first practical solar cell was born in Baer laboratory in 1954, which ushered in the era of solar cell technology. The generation principle of solar cell solar cell work includ