3、代表性论文 1)Xue Zheng, Weimin Li, Armin G. Aberle, Selvaraj Venkataraj*. Efficiency enhancement of ultra-thin Cu(In,Ga)Se2 solar cells: optimizing the absorber bandgap profile by numerical device simulations. Current Applied Physics, 16, 1334 (2016). 2)Xue Zheng, Chenchao Xie, Weimin Li, Armin G. Aberle, Selvaraj Venkataraj*. Investigations of potassium-induced surface treatment of Cu(In,Ga)Se2 (CIGSe) thin film solar cells prepared by two-stage process using elemental selenium. Applied Surface Science, 525, 146368 (2020).