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Title: Optically pumped polaritons in perovskite light-emitting diodes
Authors: Leng, Meiying
Wu, Jinqi
Dini, Kevin
Liu, Jing
Hu, Zehua
Tang, Jiang
Liew, Timothy Chi Hin
Sun, Handong
Su, Rui
Xiong, Qihua
Keywords: Science::Physics::Optics and light
Issue Date: 2023
Source: Leng, M., Wu, J., Dini, K., Liu, J., Hu, Z., Tang, J., Liew, T. C. H., Sun, H., Su, R. & Xiong, Q. (2023). Optically pumped polaritons in perovskite light-emitting diodes. ACS Photonics, 10(5), 1349-1355.
Project: MOE2018- T3-1-002 
Journal: ACS Photonics 
Abstract: Lead halide perovskites have achieved significant progress in light-emitting diodes (LEDs) with high efficiency in the past few decades. They are also ideal candidates for reaching the strong exciton-photon coupling regime due to their large exciton binding energy and oscillator strength. The generation and control of exotic phenomena in perovskite electroluminescent microcavities, such as electrically pumped polariton lasing and polariton LEDs, operating in the strong coupling regime at room temperature, is still a great challenge. Here, we demonstrate room-temperature strong coupling in a perovskite LED structure. The best device shows a current efficiency of 4.5 cd/A and an external quantum efficiency of 1.4% while exhibiting anticrossing behavior via optical pumping. Our approach represents a new strategy to explore ultrafast LEDs as well as electrically pumped perovskite lasing.
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.2c01999
Schools: School of Physical and Mathematical Sciences 
School of Electrical and Electronic Engineering 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © 2023 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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