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

• DOI: 10.1002/advs.202413402
• Publication Date: 2025-01-22T11:45:50Z
• Authors: 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
• Keywords: perovskite nanocrystals; self‐assembly; Science; electron–phonon coupling; Q; Mn2+ ions

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