Materials, photophysics and device engineering of perovskite light-emitting diodes

Ziming Chen; Zhenchao Li; Thomas R Hopper; Artem A Bakulin; Hin-Lap Yip

doi:10.1088/1361-6633/abefba

Materials, photophysics and device engineering of perovskite light-emitting diodes

Rep Prog Phys. 2021 Apr 12;84(4). doi: 10.1088/1361-6633/abefba.

Authors

Ziming Chen^{1

2}, Zhenchao Li¹, Thomas R Hopper³, Artem A Bakulin³, Hin-Lap Yip^{1

4

5

6}

Affiliations

¹ State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, People's Republic of China.
² School of Environment and Energy, South China University of Technology, Guangzhou University City, Panyu District, Guangzhou 510006, People's Republic of China.
³ Department of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United Kingdom.
⁴ Innovation Center of Printed Photovoltaics, South China Institute of Collaborative Innovation, Dongguan 523808, People's Republic of China.
⁵ Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region of China.
⁶ School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region of China.

PMID: 33730709
DOI: 10.1088/1361-6633/abefba

Abstract

Here we provide a comprehensive review of a newly developed lighting technology based on metal halide perovskites (i.e. perovskite light-emitting diodes) encompassing the research endeavours into materials, photophysics and device engineering. At the outset we survey the basic perovskite structures and their various dimensions (namely three-, two- and zero-dimensional perovskites), and demonstrate how the compositional engineering of these structures affects the perovskite light-emitting properties. Next, we turn to the physics underpinning photo- and electroluminescence in these materials through their connection to the fundamental excited states, energy/charge transport processes and radiative and non-radiative decay mechanisms. In the remainder of the review, we focus on the engineering of perovskite light-emitting diodes, including the history of their development as well as an extensive analysis of contemporary strategies for boosting device performance. Key concepts include balancing the electron/hole injection, suppression of parasitic carrier losses, improvement of the photoluminescence quantum yield and enhancement of the light extraction. Overall, this review reflects the current paradigm for perovskite lighting, and is intended to serve as a foundation to materials and device scientists newly working in this field.

Keywords: device engineering; light-emitting diodes; materials; perovskites; photophysics.

Publication types

Review