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) Top-view SEM images of the Se crystalline film coated on FTO/TiO2 substrate at (a) low and (b) high magnifications and EDX analysis of FTO/TiO2/Se films with elemental mapping. |