Generation and Enhancement of Chirality-Induced Spin-Polarized Emission in 3D@1D Lead Halide Perovskites
Source abstract
Abstract
Chiral perovskites have attracted tremendous attention to motivate the development of chiroptoelectronics, but the structural configuration supporting efficient spin-polarized emission (SPE) and optical gain has yet to be comprehensively explored. Herein, we uncover the intrinsic ground-state and excited-state chirality in chiral 1D perovskite crystals, study excited-state chirality in mixed-halide films with suppressed signal crosstalk, and achieve and enhance chirality-triggered SPE in three dimensions (3D) embedded in one-dimensional (1D) (3D@1D) perovskites toward displays. SPE in 3D@1D perovskites was modulated by varying the 1D-to-3D molar ratios, leading to a record efficiency of 89.04% for chirality-induced optical spin polarization. It was further enhanced by stimulated emission, reducing operation temperature, and altering halide composition, resulting in a significantly boosted glum of 29.2%. These results provide an in-depth understanding of chirality-triggered SPE in high-performance optoelectronics.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Crystal Materials & Institute of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa 999078, Macau, People’s Republic of China
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Higher Education Discipline Innovation Project
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