Beijing time on September 20 news, the Institute of Natural Sciences, Graduate School of Graduate School of Okayama University, Japan, Ikeda Institute led a group to develop a new type of solar cell made of iron oxide compounds named "Green Ferrite (GF)". The solar cell absorbs 100 times more than previous silicon solar cells.
The solar cell is expected to absorb infrared radiation that has not been absorbed for a long time. Ikeda said: "Infrared light is generated with heat. In addition to sunlight, it is expected to use the heat generated by the kitchen ceiling, such as a fire source, and the street to generate electricity." He said he will strive to put it into use in 2013.
GF is a powder and can be applied thinly to the metal as a medium. The target cost of generating 1 kW of electricity is approximately 1,000 yen (approximately RMB 83), which is far lower than that of silicon batteries that previously cost about 1 million yen. Compared to conventional platy solar cells, the new product can achieve large bending and stretching, so it can be wound on chimneys, utility poles, etc., and has a wide range of settings.
According to Ikeda's introduction, the principle of solar cell power generation is that a solar cell is composed of two positive and negatively charged semiconductors. When light is absorbed by a negatively charged semiconductor surface, the negatively charged electrons in the semiconductor are repelled. The electrons move to a positively charged semiconductor surface through an externally connected circuit to generate electricity.
The electrons that accumulate on the GF maintain a delicate balance, and once they are exposed to light, their balance is broken, causing a large number of electrons to move in an instant. Therefore, the amount of electricity generated by the same amount of light will increase significantly.
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