CsPbBr3/CdS Core/Shell Structure Quantum Dots for Inverted Light-Emitting Diodes Application

被引：42

作者：

Tang, Xiaosheng ^{[1
]}

Yang, Jie ^{[1
]}

Li, Shiqi ^{[1
]}

Chen, Weiwei ^{[1
]}

Hu, Zhiping ^{[1
]}

Qiu, Jing ^{[1
]}

机构：

[1] Chongqing Univ, Coll Optoelect Engn, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing, Peoples R China

来源：

FRONTIERS IN CHEMISTRY | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

semiconductors; luminescence; core/shell structure; quantum dots; light-emitting diode; BRIGHT; NANOCRYSTALS; EMISSION; CSPBX3; BR;

D O I：

10.3389/fchem.2019.00499

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel CsPbBr3/CdS core/shell structure quantum dots (QDs) were successfully synthesized using a facile hot-injection method. The corresponding CsPbBr3/CdS QDs based light-emitting diodes (QLEDs) were further prepared, which demonstrated the maximum luminance of 354 cd/m(2) and an external quantum efficiency (EQE) of 0.4% with the current efficiency (CE) of 0.3 cd/A. Moreover, the optoelectronic performance of the CsPbBr3/CdS QDs based QLEDs exhibited a comparable enhancement in contrast to the pure CsPbBr3 QDs based QLEDs. Hypothetically, the novel CsPbBr3/CdS structure QDs introduced one new route for advanced light emission applications of perovskite materials.

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