DataVXAdvanced Functional MaterialsPaper
journal article·2025-02Open access

Chiral Quasi‐2D Perovskites Based Single Junction Spin‐Light‐Emitting Diodes

Binhe Li, Yang Li, Wei Yuan, Xiangpeng Zhang, Sheng Tao, Hongmei Zhan, Zhi‐gang Yu, Kai Wang, Jun liu, Lixiang Wang, Chuanjiang Qin

Advanced Functional Materials· Volume 35· Issue 7
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Source abstract

Abstract

Abstract Low temperature solution‐processible chiral metal halide perovskites, which posse the innately chiral‐induced spin orbit coupling (CISOC), are valuable for the realization of room temperature single junctions‐based spin‐light‐emitting diodes (spin‐LEDs), without involving integrated optics and ferromagnetic electrodes. The current challenging primarily lies on the development of high‐performance spin‐LEDs and the demonstration of the chiral‐induced spin selectivity (CISS). Herein, chiral organic cation based quasi‐2D perovskite films with prominently circularly polarized luminescence and bright emissions are fabricated for the application of room‐temperature spin‐LEDs. A remarkable external quantum efficiency (EQE) of 15.42% and circularly polarized electroluminescence (CP‐EL) of 4.98% are well achieved in ambient condition. With studies of spin‐related exciton states and magneto‐photoluminescence (magneto‐PL), the spin‐lifetime (τs) is estimated to be 20 ps. This work has greatly promoted the present growth for the high‐performance chiral perovskites spin‐LEDs.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Advanced Condensed Matter Physics · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun 130022 China

School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China

Key Laboratory of Luminescence and Optical Information Ministry of Education School of Physical Science and Engineering Beijing Jiaotong University Beijing 100044 China

Institute of Optoelectronics Technology Beijing Jiaotong University Beijing 100044 China

Sivananthan Laboratories Bolingbrook IL 60440 USA

Department of Physics and Astronomy Washington State University Pullman Washington 99164 USA

Funding

University of Science and Technology of China · National Natural Science Foundation of China · Key Technologies Research and Development Program

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