Crystalline silicon solar cells

Crystalline silicon solar cells

Research to develop integrated production only 54μm thick crystal silicon solar cell, conversion efficiency of 12.1%

It is reported that Japan's Institute of Industrial Science and Technology (JST) using amorphous silicon and crystalline silicon heterojunction developed a 54μm thick solar cell modules, and has confirmed that cell conversion efficiency of 12.1%. Production & Research Institute in July 2008 ranged from 28 to 29, the future of the Science Museum in Tokyo, Japan at the "results of the fourth solar energy research center report" on the release of such solar cells. Crystalline silicon solar cells and the existence of crystalline silicon supply prices and other serious problems. The thin is the decisive factor in cutting costs, increasing R & D activity.

The use of amorphous silicon and crystalline silicon heterojunction solar cells developed in the crystalline silicon layer of one or both sides of the amorphous silicon thin film formation. This Sanyo developed "HIT (heterojunction with intrinsic thin layer)" structure is basically the same unit.

This time, producing comprehensive study using double-sided form in the crystalline silicon layer of amorphous silicon thin films can greatly reduce the thickness of crystalline silicon to achieve a thickness of only 54μm. "In the double heterostructure-based products for the world's thinnest" (JST). The cells can be easily bent by hand.

However, after the thin-cell conversion efficiency is decreased. Thickness of 300μm, the conversion efficiency of 17.5%, while the thickness of 54μm, the conversion efficiency dropped to 12.1%. This is after thinning, the infrared wavelength greater than 900μm due to reduced efficiency.

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