Luminescence Properties of all Inorganic Perovskite CsPbBr3 Quantum Dots and Film Synthesized by Cesium Acetate

被引：0

作者：

Han L.-J. ^{[1
]}

Ma X. ^{[1
]}

Zhang Y.-T. ^{[1
]}

Dong X. ^{[1
]}

Wu G.-G. ^{[1
]}

Zhang B.-L. ^{[1
]}

机构：

[1] State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun

来源：

Zhang, Bao-Lin (zbl@jlu.edu.cn) | 1600年 / Editorial Office of Chinese Optics卷 / 41期

关键词：

CsPbBr[!sub]3[!/sub; Perovskite; PL; Quantum dot; XRD;

D O I：

10.37188/CJL.20200143

中图分类号：

学科分类号：

摘要：

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. CsPbBr3 all-inorganic perovskite quantum dots were synthesized by heat-injection with different reaction temperatures and reaction times. The CsPbBr3 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. CsPbBr3 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. CsPbBr3 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. © 2020, Science Press. All right reserved.

引用

页码：1367 / 1375

页数：8

共 32 条

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