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Hydrogenated amorphous silicon (a-Si:H) is well known as a semiconductor that provide low cost, large area process. However, efficiency of a-Si:H solar cell is lower than other solar cells. To increase efficiency, many kinds of texturing technologies have been developed. In this paper, we suggested a new method of block textured glass by wet etching with HF, HNO3 and NH4F. We made block structure...
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