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Issue 50, 2019, Issue in Progress
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Enhancing the performance of perovskite light-emitting devices through 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene interlayer incorporation

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Abstract

Interface engineering is important for enhancing the luminance efficiency and stability of perovskite light-emitting devices. In this work, we study the effects of spin-coated 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene (TPBi) layer incorporation on the crystal structure, morphology, photo-physics, and charge transport characteristics of the underlying MAPbBr3 layer. Introduction of such a TPBi interlayer effectively reduces defect density and increases radiative recombination in the MAPbBr3 layer. Related perovskite light-emitting devices with a TPBi interlayer show a maximum external quantum efficiency of 9.9% and power efficiency of 22.1 lm W−1, which are 2.0 and 1.6 times those of the devices without a TPBi interlayer, respectively. The study provides a simple and effective method to enhance the performance of perovskite light-emitting devices.

Graphical abstract: Enhancing the performance of perovskite light-emitting devices through 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene interlayer incorporation

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Article information


Submitted
15 Jul 2019
Accepted
10 Sep 2019
First published
16 Sep 2019

This article is Open Access

RSC Adv., 2019,9, 29037-29043
Article type
Paper

Enhancing the performance of perovskite light-emitting devices through 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene interlayer incorporation

Z. Xiao, Y. Wu, L. He, X. Yang, Y. Lian, G. Li and X. Yang, RSC Adv., 2019, 9, 29037
DOI: 10.1039/C9RA05409J

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