二维Ruddlesden-Popper钙钛矿中边缘态的起源和物理效应。
Origin and physical effects of edge states in two-dimensional Ruddlesden-Popper perovskites.
作者信息
Lu Junlin, Zhou Chunhua, Chen Weijian, Wang Xin, Jia Baohua, Wen Xiaoming
机构信息
Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn VIC 3122, Australia.
South China Academy of Advanced Optoelectronics and International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, Guangdong 510631, China.
出版信息
iScience. 2022 May 18;25(6):104420. doi: 10.1016/j.isci.2022.104420. eCollection 2022 Jun 17.
The edge region of two-dimensional (2D) Ruddlesden-Popper (RP) perovskites exhibits anomalous properties from the bulk region, including low energy emission and superior capability of dissociating exciton, which is highly beneficial for the optoelectronic devices like solar cells and photodetectors, denoted as "edge states". In this review, we introduce the recent progress on the edge states that have been focused on the origin and the optoelectronic properties of edge states in 2D RP perovskites. By providing theoretical frameworks and experimental observations, we elucidate the origin of the edge states from two aspects, intrinsic electronic properties and extrinsic structure distortions. Besides, we introduce the physical properties of the edge states and current debating on this topic. Finally, we present an outlook on future research about the edge states of 2D RP perovskites.
二维（2D）Ruddlesden-Popper（RP）钙钛矿的边缘区域表现出与本体区域不同的异常特性，包括低能量发射和优异的激子解离能力，这对太阳能电池和光电探测器等光电器件非常有利，这些特性被称为“边缘态”。在这篇综述中，我们介绍了关于边缘态的最新进展，这些进展主要集中在二维RP钙钛矿中边缘态的起源和光电特性上。通过提供理论框架和实验观察结果，我们从本征电子性质和外在结构畸变两个方面阐明了边缘态的起源。此外，我们介绍了边缘态的物理性质以及当前关于这个主题的争论。最后，我们对二维RP钙钛矿边缘态的未来研究进行了展望。
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