Japan-Launched Ultra-Thin Crystalline Silicon Solar Cells, The Conversion Rate Of 12%

It is reported that Japan's Industrial Technology Research Institute of amorphous silicon and crystalline silicon heterojunction developed a 54 μ m thick solar cell modules, and has confirmed unit conversion efficiency of 12.1 percent. Japan's Industrial Technology Research Institute in July 08 to 28 ~ on the 29th Science Museum in Tokyo, Japan's future at the "fourth generation of solar energy research center will report the results" posted on the solar cells. Crystalline silicon solar batteries crystalline silicon wafer supply and prices, and other serious problems. And thin is the decisive factor in cost-cutting, research and development gradually active.

This time, production Research Institute crystalline silicon used in the formation of amorphous silicon thin film of the two-sided structure, significantly reduces the crystalline silicon layer thickness, and the thick only 54 μ m. "In the double-heterostructure products in the world's thinnest" (middle Research Institute). Such cells are easily bent by hand.

But after the cells are thin conversion efficiency decline. Thickness of 300 μ m, the conversion efficiency of 17.5 percent, while 54 μ m thick, fell to 12.1 percent conversion efficiency. This is by thinning, the wavelength greater than 900 μ m infrared use efficiency of the decline.

Source: 技术在线 Aug. 4, 2008