Alleviating hysteresis and improving device stability of perovskite solar cells via alternate voltage sweeps.

Autor: Chao Xia, Wei-Dong Song, Chong-Zhen Zhang, Song-Yang Yuan, Wen-Xiao Hu, Ping Qin, Ru-Peng Wang, Liang-Liang Zhao, Xing-Fu Wang, Miao He, Shu-Ti Li
Předmět:
Zdroj: Chinese Physics B; Jan2017, Vol. 26 Issue 1, p1-1, 1p
Abstrakt: The anomalous hysteresis in a perovskite solar cell induced by an asymmetric field is confirmed by a capacitance–voltage measurement. By applying several cycles of alternating reverse and forward scans, this hysteresis phenomenon is obviously alleviated, resulting in a hysteresis-less state in the perovskite solar cell. Meanwhile, the open-circuit voltage and power conversion efficiency of the perovskite solar cell are enhanced by 55.74% and 61.30%, respectively, while the current density and fill factor keep almost invariable. The operation of alleviating hysteresis is essential for further research and is likely to bring in performance gains. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index