| 醋酸铅作为铅源合成CH3NH3PbBr3-xClx纳米晶体颗粒 |
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| 作者单位： | 1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| 基金项目： | the National Natural Science Foundation of China(51303186);the National Natural Science Foundation of China(51673204);National Materials Genome Project, China(2016YFB0700600) |
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| 摘 要： |
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| 关 键 词： | 钙钛矿 CH3NH3PbBr3-xClx 纳米晶体 醋酸铅 |
| 收稿时间： | 2017-04-03 |
Synthesis of Colloidal Perovskite CH3NH3PbBr3-xClx Nanocrystals with Lead Acetate |
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| Authors: | Ya-Nan WANG Pin MA Lu-Mei PENG Di ZHANG Yan-Yan FANG Xiao-Wen ZHOU Yuan LIN |
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| Institution: | 1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| Abstract: | Lead acetate, which is highly soluble in dimethylformamide, was used to synthesize mixed halide perovskite CH3NH3PbBr3-xClx (MA = CH3NH3, 0 ≤ x ≤ 3) nanocrystals (NCs). This method provides an approach to address the low solubility of lead halides, especially lead chloride. Different Br/Cl ratios in MAPbBr3-xClx lead to various optical properties. The photoluminescence emission peak can be tuned from 399 to 527 nm. Their full-widths at half-maxima (FWHM) are about 20 nm. MAPbBr3-xClx NCs have an average diameter of ~(11 ± 3) nm and have uniform dispersion in toluene. The MAPbBr3 NCs have a long average recombination lifetime (τave = 97.4 ns) and a photoluminescence quantum yield (PLQY) of up to 73%. |
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| Keywords: | Perovskite CH3NH3PbBr3-xClx Nanocrystal Lead acetate |
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