Preparation of CsPbX3(X=Cl,Br,I) Perovskite Quantum Dots with Multicolor and High Luminescence Efficiency and Its Application in Light Emitting Diode Devices

doi:10.11944/j.issn.1000-0518.2019.08.190016

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (8): 932-938.DOI: 10.11944/j.issn.1000-0518.2019.08.190016

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Preparation of CsPbX₃(X=Cl,Br,I) Perovskite Quantum Dots with Multicolor and High Luminescence Efficiency and Its Application in Light Emitting Diode Devices

HUANG Guobin^a,LUO Dengfeng^a,ZHANG Maosheng^a^b^*()

^aSchool of Chemistry,Chemical Engineering and Environment
^bFujian Province University Key Laboratory of Analytical Science,Minnan Normal University,Zhangzhou,Fujian 363000,China

Received:2019-01-17 Accepted:2019-04-04 Published:2019-08-01 Online:2019-07-25
Contact: ZHANG Maosheng
Supported by:
Supported by the Natural Science Foundation of Fujian Province, China(No.2013J01062), Science and Technology Projects of the Education Department, Fujian Province of China(No.JK2017032), the Natural Science Foundation of Zhangzhou City, China(No.ZZ2016J30), the Natural Science Foundation of Minnan Normal University(No.Mk201721)

Abstract

Abstract:

Highly efficient and polychromatic luminescent CsPbX₃ perovskite quantum dots(PQDs) were synthesized under room temperature. The entire reaction is very fast and simple. Polychromatic luminescence of CsPbX₃ PQDs can be achieved by adjusting different halide compositions(Cl, Br, I). The as-prepared CsPbX₃ PQDs have a cubic morphology with an average size about 10 nm. The photoluminescence of CsPbX₃ PQDs has a characteristic of wide visible spectral region of 410~630 nm, narrow emission line-widths of 14~38 nm and quantum yields of 10%~90%. Finally, the CsPbX₃ PQDs are successfully applied to prepare light emitting diode(LED) devices. At a constant voltage work for a long time, the emission color, intensity, and color coordinates of the LED device remain unchanged.

Key words: perovskites, quantum dots, luminescence, room temperature synthesis method, light emitting diode

HUANG Guobin, LUO Dengfeng, ZHANG Maosheng. Preparation of CsPbX₃(X=Cl,Br,I) Perovskite Quantum Dots with Multicolor and High Luminescence Efficiency and Its Application in Light Emitting Diode Devices[J]. Chinese Journal of Applied Chemistry, 2019, 36(8): 932-938.

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Preparation of CsPbX₃(X=Cl,Br,I) Perovskite Quantum Dots with Multicolor and High Luminescence Efficiency and Its Application in Light Emitting Diode Devices

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