Capping-ligand free grinding synthesis of luminescent lead halide perovskite nanocrystals

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作者：
Zhang, Ting [1 ]
Jiang, Chunli [1 ]
Luo, Rong [1 ]
Qi, Ruijuan [1 ,2 ]
Liu, Mengqin [3 ]
Luo, Chunhua [1 ]
Lin, Hechun [1 ]
Peng, Hui [1 ,2 ]
机构：
[1] Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai,200241, China
[2] Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan,Shanxi,030006, China
[3] Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang,421008, China
来源：
Materials Today Communications | 2021年 / 26卷
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摘要：
Luminescent (trimethylbromomethyl) ammonium lead tribromide ((TMBM)PbBr3) nanocrystals are synthesized by a green single-step mechano-grinding method in large scale. The photoluminescence quantum yield (PL QY) of the obtained (TMBM)PbBr3 nanocrystals is 2.61 %. The luminescence of the nanocrystals can be significantly enhanced by introducing water or methanol during the grinding process. The maximum PL QYs of 7.65 % and 4.69 % are obtained for the nanocrystals prepared by the addition of water and methanol, respectively. The emission light of (TMBM)PbBr3 nanocrystals can be tuned by the doping of chloride ion. © 2020 Elsevier Ltd
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