Microstructure and lateral conductivity control of hydrogenated nanocrystalline silicon oxide and its application in a-Si:H/a-SiGe:H tandem solar cells

Li Tian-Tian^{1, 2, 4, 5}, Yang Tie^{1, 3}, Fang Jia^{1, 2, 4, 5}, Zhang De-Kun^{1, 2, 4, 5}, Sun Jian^{1, 2, 4, 5}, Wei Chang-Chun^{1, 2, 4, 5}, Xu Sheng-Zhi^{1, 2, 4, 5}, Wang Guang-Cai^{1, 2, 4, 5}, Liu Cai-Chi³, Zhao Ying¹, Zhang Xiao-Dan^{1, 2, 4, 5, †,}

Plots of external quantum efficiency versus wavelength of a-Si:H/a-SiGe:H solar cells with different SiO_x back reflector.