AUTHOR=Tang Xiaosheng , Yang Jie , Li Shiqi , Chen Weiwei , Hu Zhiping , Qiu Jing 

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

JOURNAL=Frontiers in Chemistry

VOLUME=7

YEAR=2019

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2019.00499

DOI=10.3389/fchem.2019.00499

ISSN=2296-2646

ABSTRACT=<p>Novel CsPbBr<sub>3</sub>/CdS core/shell structure quantum dots (QDs) were successfully synthesized using a facile hot-injection method. The corresponding CsPbBr<sub>3</sub>/CdS QDs based light-emitting diodes (QLEDs) were further prepared, which demonstrated the maximum luminance of 354 cd/m<sup>2</sup> 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 CsPbBr<sub>3</sub>/CdS QDs based QLEDs exhibited a comparable enhancement in contrast to the pure CsPbBr<sub>3</sub> QDs based QLEDs. Hypothetically, the novel CsPbBr<sub>3</sub>/CdS structure QDs introduced one new route for advanced light emission applications of perovskite materials.</p>