Rapid and Complete Conversion of CH3NH3PbI3 for Perovskite/C60 Planar-Heterojunction Solar Cells by Two-Step Deposition
Weihai Sun, Yunlong Li, Weibo Yan, Haitao Peng, Senyun Ye, Haixia Rao, Ziran Zhao, Zhiwei Liu, Zuqiang Bian and Chunhui Huang
Version of Record online: 16 FEB 2017 | DOI: 10.1002/cjoc.201600704
An improved two-step deposition method by optimizing the reaction temperature and the dipping time was proposed for the fabrication of perovskite films. The perovskite film fabricated at 70 C exhibited a full surface coverage with an average thickness of approximately 240 nm. The corresponding inverted perovskite solar cell with a structure of ITO/PEDOT PSS/CH3NH3PbI3/C60/BCP/Ag showed a superior PCE of 13.6% than those of the devices fabricated by one-step spin-coating method (5.73%) and two-step deposition method at 20 C (8.06%).