| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5379108 | Chemical Physics Letters | 2016 | 19 Pages |
Abstract
⿢The co-evaporated perovskite thin film has a cubic crystal structure.⿢From XRD, CH3NH3PbI3 converted to PbI2 completely after air exposure for 22 h (76.4 °F, 25% humidity level).⿢The atomic ratio of co-evaporated perovskite observed by XPS is very close to the ideal stoichiometric ratio of CH3NH3PbI3.⿢The degradation process revealed the complete removal of N and substantial reduction of I.⿢The aggregation of PbI2 crystals roughened the film and resulted in a partial exposure of the Au substrate, confirmed by AFM and XPS.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Congcong Wang, Youzhen Li, Xuemei Xu, Chenggong Wang, Fangyan Xie, Yongli Gao,