Toward eco‐friendly and stable halide perovskite‐inspired materials for light‐emitting devices applications by dimension classification: Recent advances and opportunities. Issue 1 (21st December 2021)

• Record Type: Journal Article
• Authors: Wang, Yue; Zhang, Fei; Ma, Jingli; Ma, Zhuangzhuang; Chen, Xu; Wu, Di; Li, Xinjian; Shi, Zhifeng; Shan, Chongxin
• Is Part Of: EcoMat. Volume 4:Issue 1(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-21
• Subjects: electrically excited -- lead‐free perovskites -- light‐emitting devices -- optically excited -- perovskite derivatives; Materials -- Environmental aspects -- Periodicals; Clean energy -- Periodicals; 621.042
• DOI: 10.1002/eom2.12160
• Languages: English
• ISSNs: 2567-3173

Abstract

Abstract: Research on lead‐halide perovskites for photovoltaic and optoelectronic applications represents a rapidly developing field of optoelectronics on account of their remarkable optoelectronic properties, including large absorption coefficient, low‐temperature solution processability, tunable bandgap, high‐carrier mobility, and so on. Unfortunately, the toxicity of metal Pb and intrinsic instability of lead‐halide perovskites are still big obstacles for their practical applications and future commercial development. Therefore, various lead‐free eco‐friendly perovskites and their derivatives have been alternatively explored to overcome the above hurdles. In this review, the preparation methods, structures, optical characteristics, and stability of lead‐free metal halide perovskites are summarized according to different dimensions at molecular level. Furthermore, we emphatically introduce the optoelectronic properties of low‐dimensional lead‐free halides with broadband emission originated from the self‐trapped excitons. Then, we give a brief description of preliminary exploration results and significant achievements of optically excited white light‐emitting devices (WLEDs) and electrically excited multi‐color LEDs. Finally, this review was finished with a critical perspective into the potential challenging issues of this rapidly evolving fields. Abstract : This review first summarizes the recently developed lead‐free eco‐friendly halide perovskites and perovskite derivatives by dimension classification at the molecular level. Then, the significant achievements of optically excited WLEDs and electrically excited LEDs based on different kinds of lead‐free halide materials are discussed. Finally, we briefly present our perspectives on the challenges and development opportunities of this rapidly evolving field.