Li-jin HAN, Xue MA, Yuan-tao ZHANG, et al. Luminescence Properties of all Inorganic Perovskite CsPbBr3 Quantum Dots and Film Synthesized by Cesium Acetate. [J]. Chinese Journal of Luminescence 41(11):1367-1375(2020)
DOI:
Li-jin HAN, Xue MA, Yuan-tao ZHANG, et al. Luminescence Properties of all Inorganic Perovskite CsPbBr3 Quantum Dots and Film Synthesized by Cesium Acetate. [J]. Chinese Journal of Luminescence 41(11):1367-1375(2020) DOI: 10.37188/CJL.20200143.
Luminescence Properties of all Inorganic Perovskite CsPbBr3 Quantum Dots and Film Synthesized by Cesium Acetate
In order to optimize the influence of reaction process on the quality of synthesized perovskite quantum dots(QDs) and the QDs thin films
cesium acetate is used as the raw material for the synthesis of precursors because of its better solubility than cesium carbonate. A series of properties of quantum dots and films prepared under different conditions were characterized. CsPbBr
3
all-inorganic perovskite quantum dots were synthesized by heat-injection with different reaction temperatures and reaction times. The CsPbBr
3
quantum dot films were prepared
via
different spin coating rates and annealing times. X-ray diffraction
absorption spectrum
fluorescence lifetime and TEM tests were carried out on the prepared QDs and the photoluminescence properties of the QD films were characterized. CsPbBr
3
all-inorganic perovskite quantum dots were prepared by using cesium acetate with better solubility as the raw material for synthesis. It is found for the reaction temperature of 180℃ and the reaction time of 5 s
the quantum dots have smaller size of 8 nm and longer fluorescence life of 8 ns with high crystal quality and absorption characteristics. CsPbBr
3
QD films prepared with rotation coating speed of 3 000 r/min and annealing time of 10 min have higher photoluminescence intensity and smaller full width at half maxima. Compared with quantum dot materials synthesized from cesium carbonate at the same conditions
quantum dots synthesized from cesium acetate as raw materials and the QD films have better optical properties.
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