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Issue 47, 2019, Issue in Progress
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High-performance and stable CsPbBr3 light-emitting diodes based on polymer additive treatment

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Abstract

Because of their high efficiency and sharp emission, perovskite light-emitting diodes are a promising candidate for next-generation lighting techniques. However, the relatively poor stability of perovskite light-emitting diodes lowers their utility. Therefore, a highly stable perovskite light-emitting diode has to be developed to meet the commercial demand. Herein, we report a highly stable CsPbBr3 light-emitting diode via simple polymer treatment. The addition of 2-methyl-2-oxazoline in perovskite film assists the formation of CsPbBr3 nanocrystals, improving the quality and photoluminescence property of perovskite film. Based on such CsPbBr3 nanocrystals and polymer hybrid film, our device presents a high external quantum efficiency and luminance of around 3.0% and 16 648 cd m−2, respectively. Moreover, an excellent device half-lifetime of more than 2.4 hours has been achieved, under continuous operation at a relatively high initial luminance of 1000 cd m−2, representing one of the most stable PeLEDs operated at such high initial luminance.

Graphical abstract: High-performance and stable CsPbBr3 light-emitting diodes based on polymer additive treatment

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Supplementary files

Article information


Submitted
10 Jul 2019
Accepted
27 Aug 2019
First published
03 Sep 2019

This article is Open Access

RSC Adv., 2019,9, 27684-27691
Article type
Paper

High-performance and stable CsPbBr3 light-emitting diodes based on polymer additive treatment

W. Cai, Z. Chen, D. Chen, S. Su, Q. Xu, H. Yip and Y. Cao, RSC Adv., 2019, 9, 27684
DOI: 10.1039/C9RA05270D

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    [Original citation] - Published by The Royal Society of Chemistry.

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