Spin-Configuration of Emission States in Zero-dimensional Metal Halides

IF 16.3 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Zhiyuan Kuang, Xinyu Huang, Xing Wang, Chengcheng Wang, Xinrui Wang, Wei Huang, Qiming Peng, Jianpu Wang
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引用次数: 0

Abstract

Understanding the spin-configuration of excited states in a luminescent material is essential for tailoring its properties for many applications such as light-emitting diodes and spin-optoelectronic devices. Zero-dimensional organic-inorganic metal halide (0D-OIMH) materials have demonstrated remarkable potential in diverse applications owing to their captivating optoelectronic characteristics. However, the electronic structure and spin-configuration of the frequently observed dual-peak emission in these materials remains a subject of intensive debate. In this study, we employ low temperature magneto-optical measurements to investigate the excited state structure of a representative 0D-OIMH, namely (Bmpip)2SnBr4. The spin-configurations of the dark and bright states are clearly elucidated by measuring the magneto-polarization of the emissions. Our results reveal that the high-energy peak arises from bright excited states within a higher energy band, whilst, the low-energy peak originates from a combination of triplet-bright states and singlet-dark states. These findings provide an unambiguous understanding of the exciton structures of the distinctive 0D-OIMHs.
零维金属卤化物发射态的自旋配置
了解发光材料中激发态的自旋配置对于为发光二极管和自旋光电器件等许多应用定制其特性至关重要。零维有机-无机金属卤化物(0D-OIMH)材料因其迷人的光电特性而在各种应用中展现出非凡的潜力。然而,在这些材料中经常观察到的双峰发射的电子结构和自旋配置仍然是一个争论不休的话题。在本研究中,我们利用低温磁光测量来研究具有代表性的 0D-OIMH 激发态结构,即 (Bmpip)2SnBr4。通过测量发射的磁偏振,我们清楚地阐明了暗态和亮态的自旋配置。我们的研究结果表明,高能峰来自较高能带内的亮激发态,而低能峰则来自三重亮态和单重暗态的组合。这些发现使我们对独特的 0D-OIMH 的激子结构有了明确的了解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
National Science Review
National Science Review MULTIDISCIPLINARY SCIENCES-
CiteScore
24.10
自引率
1.90%
发文量
249
审稿时长
13 weeks
期刊介绍: National Science Review (NSR; ISSN abbreviation: Natl. Sci. Rev.) is an English-language peer-reviewed multidisciplinary open-access scientific journal published by Oxford University Press under the auspices of the Chinese Academy of Sciences.According to Journal Citation Reports, its 2021 impact factor was 23.178. National Science Review publishes both review articles and perspectives as well as original research in the form of brief communications and research articles.
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