General Strategy for Rapid Production of Low-Dimensional All-Inorganic CsPbBr3 Perovskite Nanocrystals with Controlled Dimensionalities and Sizes

被引:49
作者
Liu, Wenna [1 ,2 ]
Zheng, Jinju [2 ]
Cao, Sheng [3 ]
Wang, Lin [2 ]
Gao, Fengmei [2 ]
Chou, Kuo-Chih [1 ]
Hou, Xinmei [1 ]
Yang, Weiyou [2 ]
机构
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
[2] Ningbo Univ Technol, Inst Mat, Ningbo 315016, Zhejiang, Peoples R China
[3] Natl Univ Singapore, Dept Chem & Biomol Engn, 10 Kent Ridge Crescent, Singapore 119260, Singapore
基金
中国国家自然科学基金;
关键词
MICROWAVE-ASSISTED SYNTHESIS; COLLOIDAL SYNTHESIS; QUANTUM DOTS; NANOPARTICLES; CSPBX3; CDSE; NANOSHEETS; GROWTH;
D O I
10.1021/acs.inorgchem.7b02941
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Currently, all-inorganic CsPbX3 (X = Br, I, CO perovskite nanocrystals (NCs) are shining stars with exciting potential applications in optoelectronic devices such as solar cells, light-emitting diodes, lasers, and photodetectors, due to their superior performance in comparison to their organic inorganic hybrid counterparts. In the present work, we report a general strategy based on a microwave technique for the rapid production of low-dimensional all-inorganic CsPbBr3 perovskite NCs with tunable morphologies within minutes. The effect of the key parameters such as the introduced ligands, solvents, and PbBr2 precursors and microwave powers as well as the irradiation times on the production of perovskite NCs was systematically investigated, which allowed their growth with tunable dimensionalities and sizes. As a proof of concept, the ratio of OA to OAm as well as the concentration of PbBr2 precursor played important roles in triggering the anisotropic growth of the perovskite NCs, favoring their growth into 1D/2D single-crystalline nanostructures. Meanwhile, their sizes could be tailored by controlling the microwave powers and irradiation times. The mechanism for the tunable growth of perovskite NCs is discussed.
引用
收藏
页码:1598 / 1603
页数:6
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