CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability
| 发表年度： |
2017 |
| 期： |
10 |
| 卷： |
5 |
| 页： |
4803-4808 |
| 摘要： |
We report here the discovery of a fancy interaction between cesium iodide (CsI) and methylamine (CH3NH2) due to the presence of the hydrogen bond. The formed CsI center dot xCH(3)NH(2) is a liquid phase, which facilitates the large scale fabrication of highly uniform cesium-containing perovskite films with strong (110) preferred orientation by the CH3NH2 gas healing process. With this method, at most 10% nonpolar Cs cations could fully dope into the crystal lattice and extremely enhance the interaction of the inorganic framework with a more symmetrical PbI6 octahedron, resulting in obvious improvement in moisture stability under continuous illumination. |
| 刊物名称： |
JOURNAL OF MATERIALS CHEMISTRY A |
| 影响因子： |
10.733 |
