Study on Spectrum Response of Amorphous Silicon Solar Cells

Abstract

Amorphous silicon solar cells studied here are fabricated by glow discharge decomposition system. There are 2 structures of solar cells, namely; type I having the structure of glass/ITO/SnO₂ //p-a-SiC/i-a-Si/n-µc-Si//Al and type II having the structure of glass//ITO/SnO₂ //p-a-SiC/p-µc-SiC/i-a-Si/n-µc-Si//Al. Measuring system for study on spectrum response of solar cells with various structures in set up. Experimental result showed that the cell with i-layer thickness of 6000^oA in type I gave the best spectrum response. But the cell in type II illustrated much better open circuit voltage of 0.85 volt. Each amorphous silicon solar cell gave a good spectrum response in the range of visible light while the single crystal silicon solar cell responded well to infrared wavelength range.