A facile reprecipitation method of Quantum-confined CsPbBr3 perovskite quantum dots for narrow-band deep-blue emission

Applied Physics Express(2022)

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摘要
Abstract Quantum-confined cesium lead tribromide perovskite quantum dots (PeQDs) are attractive photonic sources for versatile optoelectronic devices and thus the synthetic routes have been explored via various techniques. However, the lack of a general method to fabricate the quantum-confined PeQD with remarkable stability at colloidal state has been one of the major obstacles to device applications. Herein, we propose a simple and robust ligand-assisted reprecipitation method associated with didodecyl dimethyl ammonium bromide for quantum-confined PeQDs with remarkable stability at colloidal state. This method will shed a light on the field of colloidal PeQDs synthesis for the next generation of photonic sources.
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关键词
blue-emission, quantum confinement effect, ligand-assisted reprecipitation, perovskite quantum dot
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