High-temperature synthesis in nonpolar solvent for CsPbBr3 and CH3NH3PbBr3 perovskite nanocrystals with high-efficient luminescence |
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| Authors: | Xiaodan Liu Qiang Wang Ziqiang Cheng Li Zhou Ququan Wang |
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| Affiliation: | 1.Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, School of Physics and Technology,Wuhan University,Wuhan, Hubei,China |
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| Abstract: | We report a method to synthesize both organicinorganic CH3NH3PbBr3 and all-inorganic CsPbBr3 perovskite nanocrystals in nonpolar solvent at high temperature. The cesium oleate and CH3NH3Br (MABr) are prepared and then injected into the nonpolar solvent of octadecene including oleic acid, oleylamine, and lead halide. In the synthesis of organic-inorganic perovskites of CH3NH3PbBr3, the frequently-used polar solvent of dimethylformamide or other polar solvents are not used. The prepared CsPbBr3 nanocrystals are spherical nanoparticles with the diameter of 250 nm. The CH3NH3PbBr3 perovskites are micro- scale hexagonal nanoplatelets. The colloidal perovskites exhibit high-efficient fluorescence and excellent stability. |
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