| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5489664 | Journal of Crystal Growth | 2017 | 6 Pages |
Abstract
We systematically synthesized CH3NH3PbI3 crystals using solvothermal process, and the reaction conditions such as concentration of the precursor, temperature, time, and lead source have been comprehensively investigated to obtain shape-controlled CH3NH3PbI3 crystals. The results showed that the CH3NH3PbI3 crystals exhibit tetragonal phase and the crystals change from nanoparticles to hopper-faced cuboids. Photoluminescence spectra of the crystals obtained with different lead sources show a blue shift due to the presence of defects in the crystals, and the peak intensity is very sensitive to the lead sources. Moreover, impurities (undesirable byproducts and excess components like HI or CH3NH2) presented during crystal growth can result in hopper growth.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Baohua Zhang, Fuqiang Guo, Lianhong Yang, Xiuling Jia, Bin Liu, Zili Xie, Dunjun Chen, Hai Lu, Rong Zhang, Youdou Zheng,