Silicon dioxide coated caesium-lead-bromine-perovskite nanocrystal compound and microwave assisted heating synthesis method thereof

The invention discloses silicon dioxide coated caesium-lead-bromine-perovskite nanocrystal compound and a microwave assisted heating synthesis method thereof. Through a microwave assisted heating way,1,3,5-tri(bromomethyl)benzene, 3-aminopropyl triethoxysilane, lead stearate and cesium carbonate are taken as precursors, and octadecene is taken as a solvent to synthesize CsPbBr3@SiO2 perovskite nanocrystal compound. Compared with CsPbBr3PNCs, the prepared CsPbBr3@SiO2 perovskite nanocrystal compound has very good light-emitting performance. The method has very good repeatability, and providesa brand-new idea for SiO2 coating of CsPbBr3PNCs. 本发明公开了二氧化硅包覆的铯铅溴钙钛矿纳米晶复合物及其微波辅助加热合成方法，通过微波辅助加热方式，以1,3,5-三(溴甲基)苯、3-氨基丙基三乙氧基硅烷、硬脂酸铅、碳酸铯作为前驱体，以十八烯为溶剂，步合成CsPbBr3@SiO2钙钛矿纳米晶复合物。与CsPbBr3PNCs相比，本发明制备的CsPbBr@SiO钙钛矿纳米晶复合物具有良好的发光性能。本发明方法具有良好的重现性，为CsPbBrPNCs的SiO包覆提供了全新思路。