Preparation of Se-based solar cell using spin-coating method in ambient condition Project supported by the National Natural Science Foundation of China (Grant Nos. 51579057, 5177090655, and 51379052) and the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, China (Grant No. 2016DX07). |
(color online) Cross-sectional SEM image of a complete device (a) and energy level diagram of Se-based solar cells (b). |