[PS-15-13] Development of Wider Bandgap n-type a-SiOX:H for High Efficiency a-Si:H Single Junction and a-Si:H/a-Si1-XGeX:H Tandem Solar Cells ○P. W. Chen1, L. H. Lai1, C. H. Hsu1, C. C. Tsai1 (1.National Chiao Tung Univ.(Taiwan))