CuSCN-Based Inverted Planar Perovskite Solar Cell with an Average PCE of 15.6%.
Although inorganic hole-transport materials usually possess high chemical stability, hole mobility, and low cost, the efficiency of most of inorganic hole conductor-based perovskite solar cells is still much lower than that of the traditional organic hole conductor-based cells. Here, we have successfully fabricated high quality CH3NH3PbI3 films on top of a CuSCN layer by utilizing a one-step fast deposition-crystallization method, which have lower surface roughness and smaller interface contact resistance between the perovskite layer and the selective contacts in comparison with the films prepared by a conventional two-step sequential deposition process. The average efficiency of the CuSCN-based inverted planar CH3NH3PbI3 solar cells has been improved to 15.6% with a highest PCE of 16.6%, which is comparable to that of the traditional organic hole conductor-based cells, and may promote wider application of the inexpensive inorganic materials in perovskite solar cells.
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Senyun
S
Ye
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Weihai
W
Sun
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Yunlong
Y
Li
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Weibo
W
Yan
‡Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.
Haitao
H
Peng
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Zuqiang
Z
Bian
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Zhiwei
Z
Liu
†Beijng National Laboratory for Molecular Science, State Key Laboratory of Rare Earth Materials and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Chunhui
C
Huang
CuSCN; Perovskite; hole conductor; solar cell