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We report a method to synthesize both organic-inorganic CH_3NH_3PbBr_3 and all-inorganic CsPbBr_3 perovskite nanocrystals in nonpolar solvent at high temperature. The cesium oleate and CH_3NH_3Br(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 CH_3NH_3PbBr_3, the frequently-used polar solvent of dimethylformamide or other polar solvents are not used. The prepared CsPbBr_3 nanocrystals are spherical nanoparticles with the diameter of 250 nm. The CH_3NH_3PbBr_3 perovskites are micro-scale hexagonal nanoplatelets. The colloidal perovskites exhibit high-efficient fluorescence and excellent stability.
We report a method to synthesize both organic-inorganic CH_3NH_3PbBr_3 and all-inorganic CsPbBr_3 perovskite nanocrystals in nonpolar solvent at high temperature. The cesium oleate and CH_3NH_3Br (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 CH_3NH_3PbBr_3, the frequently-used polar solvent of dimethylformamide or other polar solvents are not used. The prepared CsPbBr_3 nanocrystals are spherical nanoparticles with the diameter of 250 nm. The CH_3NH_3PbBr_3 perovskites are micro -scale hexagonal nanoplatelets. The colloidal perovskites exhibit high-efficient fluorescence and excellent stability.