多色高发光效率CsPbX3(X=Cl,Br,I)钙钛矿量子点的制备及其在发光二极管中的应用

doi:10.11944/j.issn.1000-0518.2019.08.190016

摘要/Abstract

摘要：

采用室温合成法制备出一系列具有高发光效率和多色发光的CsPbX₃钙钛矿量子点(PQDs),反应全过程快速简便,且通过调节不同的卤素组成(Cl,Br,I)可以实现CsPbX₃ PQD的多色发光。通过表征证明,CsPbX₃ PQDs呈立方晶型,平均粒径约为10 nm,发射光谱覆盖可见光波长范围为410~630 nm,半峰宽14~38 nm,荧光量子产率10%~90%。最后将CsPbX₃ PQDs应用于发光二极管(LED)器件的制备中,在恒定电压下工作时,能保持LED器件的发光颜色、强度和颜色坐标不变。

关键词: 钙钛矿, 量子点, 发光, 室温合成法, 发光二极管

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

黄国斌, 骆登峰, 张茂升. 多色高发光效率CsPbX₃(X=Cl,Br,I)钙钛矿量子点的制备及其在发光二极管中的应用[J]. 应用化学, 2019, 36(8): 932-938.

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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多色高发光效率CsPbX₃(X=Cl,Br,I)钙钛矿量子点的制备及其在发光二极管中的应用

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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