A Simple Deposition Method for Self-Assembling Single Crystalline Hybrid Perovskite Nanostructures

A sequential deposition method is developed, where the hybrid organic-inorganic halide perovskite （CH3NH3Pb （I1-xBrx）3 ） is synthesized using precursor solutions containing CH3NH3I and PbBr2 with different mole ratios and reaction times. The perovskite achieved here is quite stable in the atmosphere...

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Bibliographic Details
Published in:Chinese physics letters 2017-06, Vol.34 (6), p.117-120
Main Author: 谢文荣 刘斌 陶涛 张国刚 张保花 谢自力 陈鹏 陈敦军 张荣
Format: Article
Language:English
Subjects:
前驱体溶液
单晶体结构
反应时间
杂化
沉积方法
自组装
透射电子显微镜
钙钛矿结构
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Summary:A sequential deposition method is developed, where the hybrid organic-inorganic halide perovskite （CH3NH3Pb （I1-xBrx）3 ） is synthesized using precursor solutions containing CH3NH3I and PbBr2 with different mole ratios and reaction times. The perovskite achieved here is quite stable in the atmosphere for a relatively long time without noticeable degradation, and the perovskite nanowires are proved to be single crystalline structure, based on transmission electron microscopy.Furthermore, strong red photoluminescence from perovskite is observed in the wavelength range from 746nm to 770nm with the increase of the reaction time, on account of the exchanges between I- ions and Br- ions in the perovskite crystal. Lastly, the influences of concentration and reaction time of the precursor solutions are discussed, which are important for evolution of hybrid perovskite from nanocuboid to nanowire and nanosheet.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/6/068103