Abstract
The role of thickness and composition in the 1.00 MeV proton radiation resistance of hydrogenated amorphous silicon based-alloys solar cells is reported. Rutherford backscattering spectrometry is used to analyze the cells. Single-junction a-Si:H and a-Si/sub x/Ge/sub 1-x/:H, and dual-junction a-Si:H solar cells were investigated using proton fluences in the 1.00*10/sup 13/ to 1.00*10/sup 15/ cm/sup -2/ range. The investigations show that 1.10 mu m thick single-junction a-Si:H cells have a lower radiation resistance than 0.32 mu m thick cells.< >