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 inChinese physics letters Vol. 34; no. 6; pp. 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 Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing Ltd 01.06.2017
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.
Bibliography: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.
11-1959/O4
Wen-Rong Xie, Bin Liu,Tao Tao,Guo-Gang Zhang, Bao-Hua Zhang, Zi-Li Xie, Peng Chen, Dun-Jun Chen, Rong Zhang（ School of Electronic Science and Engineering, Nanjing University, Nanjing 210093）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/6/068103