Journal
INORGANIC CHEMISTRY
Volume 56, Issue 5, Pages 2596-2601Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.6b02763
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Funding
- National Natural Science Foundation of China [51672267, 51402285]
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Highly luminescent CsPbBr3 perovskite nanocrystals (PNCs) are homogeneously synthesized by mixing toluene solutions of PbBr2 and cesium oleate at room temperature in open air. We found that PbBr2 can be easily dissolved in nonpolar toluene in the presence of tetraoctylammonium bromide, which allows us to homogeneously prepare CsPbBr3 perovskite quantum dots and prevents the use of harmful polar organic solvents, such as N,N-dimethylformamide, dimethyl sulfoxide, and N-methyl-2-pyrrolidone. Additionally, this method can be extended to synthesize highly luminescent CH3NH3PbBr3 perovskite quantum dots. An electroluminescence device with a maximal luminance of 110 cd/m(2) has been fabricated by using high-quality CsPbBr3 PNCs as the emitting layer.
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