Phonon Involved Photoluminescence of Mn2+ Ions Doped CsPbCl3 Micro-Size Perovskite Assembled Crystals.

IF 14.3 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Jialiang Gao, Yangyang Guo, Xiuhai Zhang, Lu Liu, Huixin Li, Zeyi Cheng, Peng Liu, Fan Dong, Jiandong Wu, Taihong Liu, Huaming Sun, Miao Zhang, Hervé Aubin, Hongyue Wang, Hongqiang Wang
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引用次数: 0

Abstract

Mn2+ ions doped CsPbCl3 perovskite nanocrystals (NCs) exhibit superiority of spin-associated optical and electrical properties. However, precisely controlling the doping concentration, doping location, and the mono-distribution of Mn2+ ions in the large-micro-size CsPbCl3 perovskite host is a formidable challenge. Here, the micro size CsPbCl3 perovskite crystals (MCs) are reported with uniform Mn2+ ions doping by self-assembly of Mn2+ ions doped CsPbCl3 perovskite NCs. The electron-phonon coupling strength is enhanced in the perovskite self-assembled CsPbCl3 MCs, which remarkably accelerates the PL decay of Mn2+ ions in room temperature. Furthermore, the phonon-involved PL emission splits to two peaks at low temperature of 80 K, due to the phonon emission and absorption-induced energy exchange for exciton recombination in Mn2+ ions. These findings not only demonstrate a novel material system but also introduce a new theoretical framework for phonon-modulated PL manipulation in Mn2+-doped perovskite materials.

Mn2+离子掺杂CsPbCl3微尺寸钙钛矿组装晶体的声子参与光致发光研究。
Mn2+离子掺杂的CsPbCl3钙钛矿纳米晶体(NCs)具有优异的自旋相关光学和电学性能。然而,在大-微尺寸CsPbCl3钙钛矿基质中,精确控制掺杂浓度、掺杂位置以及Mn2+离子的单一分布是一个巨大的挑战。本文报道了微尺寸的CsPbCl3钙钛矿晶体(MCs),通过Mn2+离子掺杂CsPbCl3钙钛矿NCs的自组装,得到了均匀掺杂Mn2+离子的CsPbCl3钙钛矿晶体。在钙钛矿自组装CsPbCl3 MCs中,电子-声子耦合强度增强,显著加速了Mn2+离子在室温下的PL衰变。此外,声子参与的PL发射在80 K低温下分裂为两个峰,这是由于声子发射和吸收诱导的Mn2+离子中激子重组的能量交换。这些发现不仅展示了一种新的材料体系,而且为Mn2+掺杂钙钛矿材料中的声子调制PL操纵引入了新的理论框架。
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
Advanced Science
Advanced Science CHEMISTRY, MULTIDISCIPLINARYNANOSCIENCE &-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
18.90
自引率
2.60%
发文量
1602
审稿时长
1.9 months
期刊介绍: Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.
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