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Vol. 13 (2021)

Advances and Challenges in Two-Dimensional Organic–Inorganic Hybrid Perovskites Toward High-Performance Light-Emitting Diodes

https://doi.org/10.1007/s40820-021-00685-5
Miao Ren
School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, People’s Republic of China
Sheng Cao
School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, People’s Republic of China
Jialong Zhao
School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, People’s Republic of China
Bingsuo Zou
School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, People’s Republic of China
Ruosheng Zeng
School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non‑Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‑Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, People’s Republic of China

Corresponding Author: Ruosheng Zeng

zengrsh@guet.edu.cn

Nano-Micro Letters, Vol. 13 (2021), Article Number: 163

Abstract

Two-dimensional (2D) perovskites are known as one of the most promising luminescent materials due to their structural diversity and outstanding optoelectronic properties. Compared with 3D perovskites, 2D perovskites have natural quantum well structures, large exciton binding energy (Eb) and outstanding thermal stability, which shows great potential in the next-generation displays and solid-state lighting. In this review, the fundamental structure, photophysical and electrical properties of 2D perovskite films were illustrated systematically. Based on the advantages of 2D perovskites, such as special energy funnel process, ultra-fast energy transfer, dense film and low efficiency roll-off, the remarkable achievements of 2D perovskite light-emitting diodes (PeLEDs) are summarized, and exciting challenges of 2D perovskite are also discussed. An outlook on further improving the efficiency of pure-blue PeLEDs, enhancing the operational stability of PeLEDs and reducing the toxicity to push this field forward was also provided. This review provides an overview of the recent developments of 2D perovskite materials and LED applications, and outlining challenges for achieving the high-performance devices.


Highlights:


1 The fundamental structure, photophysical and electrical properties of 2D perovskite films were illustrated systematically.
2 The advantages and challenges of 2D perovskite light-emitting diodes (PeLED) have been also discussed, which may benefit the audient to get insight into the 2D perovskite materials as well as the resultant LED devices.
3 An outlook on further improving the efficiency of pure-blue PeLEDs, enhancing the operational stability of PeLEDs and reducing the toxicity to push this field forward was also provided.

Keywords

Two-dimension Perovskite Light-emitting diodes Optical properties
Ren, Miao, Sheng Cao, Jialong Zhao, Bingsuo Zou, and Ruosheng Zeng. 2021. “Advances and Challenges in Two-Dimensional Organic–Inorganic Hybrid Perovskites Toward High-Performance Light-Emitting Diodes”. Nano-Micro Letters 13 (August):163. https://doi.org/10.1007/s40820-021-00685-5.
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