Electrically pumped polarized exciton-polaritons in a halide perovskite microcavity
Electrically pumped polarized exciton-polaritons in a halide perovskite microcavity
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卤化物钙钛矿微腔中的电泵浦偏振激子-极化子
DOI：
10.1021/acs.nanolett.2c00906
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发表时间：
2022
期刊：
影响因子：
10.8
通讯作者：
Yu Ye
中科院分区：
文献类型：
--
作者：
Tingting Wang;Zhihao Zang;Yuchen Gao;Chao Lyu;Pingfan Gu;Yige Yao;Kai Peng;Kenji Watanabe;Takashi Taniguchi;Xiaoze Liu;Yunan Gao;Wei Bao;Yu Ye
最近，卤化铅钙钛矿微腔中的激子极化子已被广泛研究，以解决极化子凝聚和量子仿真等引人注目的现象。然而，将这些发现推进实际应用的关键一步，即实现电泵浦钙钛矿极化子发光器件，尚未提出。在这里，我们设计了一种新方法将该器件与微腔相结合，并报告了第一个卤化物钙钛矿偏振子发光器件。具体来说，该器件基于CsPbBr3电容结构，可以从同一电极注入电子和空穴，有利于激子的形成，同时保持微腔的高质量。此外，由于 CsPbBr3 微板中的光学双折射，已经证明了高度偏振的极化子发射。这项工作为实现实用的极化子器件铺平了道路，例如用于信息通信的高速发光器件和基于钙钛矿的无反转电泵浦激光器。
Recently, exciton-polaritons in lead halide perovskite microcavities have been extensively investigated to address striking phenomena such as polariton condensation and quantum emulation. However, a critical step in advancing these findings into practical applications, i.e., realizing electrically pumped perovskite polariton light-emitting devices, has not yet been presented. Here, we devise a new method to combine the device with a microcavity and report the first halide perovskite polariton light-emitting device. Specifically, the device is based on a CsPbBr3capacitive structure, which can inject the electrons and holes from the same electrode, conducive to the formation of excitons and simultaneously maintaining the high quality of the microcavity. In addition, highly polarized polariton emissions have been demonstrated due to the optical birefringence in the CsPbBr3microplate. This work paves the way for realizing practical polaritonic devices such as high-speed light-emitting devices for information communications and inversionless electrically pumped lasers based on perovskites.