磷光
余辉
材料科学
卤化物
发光
激子
加密
光电子学
金属
光致发光
激发
载流子
电荷(物理)
自发辐射
持续发光
重组
纳米技术
金属卤化物
光发射
荧光
激光器
分歧(语言学)
配体(生物化学)
光化学
化学物理
光通信
作者
Wenqing Liang,Fei Zhang,Rui Zhang,Siwei Song,Meng Wang,Mengke Bai,Gaoyu Chen,Yatao Zou,Jibin Zhang,Zhuangzhuang Ma,Gaofeng Zhao,Zhifeng Shi,Weidong Xu,Wei Huang
标识
DOI:10.1002/adma.202515658
摘要
Organic and organic-inorganic hybrid materials exhibiting room-temperature phosphorescence (RTP) and long persistent luminescence (LPL) materials have attracted growing attention for various time-resolved optoelectronic applications. To date, realizing intrinsically distinct RTP and LPL emissions within a single material system remains elusive, yet it is crucial for unlocking multifunctional applications such as multilevel optical encryption. Here, a Mn2+-doped organic-inorganic hybrid metal halide is presented that exhibits bright yellow phosphorescence under UV excitation and a long-lasting red afterglow persisting for over 600 s under X-ray irradiation. These contrasting emission behaviors originate from distinct recombination pathways: triplet exciton emission from the organic ligand governs RTP, while LPL arises from Mn2+-centered emission. The latter is enabled by the thermally activated release of charge carriers trapped at radiation-induced defects. This excitation-dependent divergence in luminescence offers temporal and spectral control over optical signals, enabling a multidimensional time-space-energy encoded optical encryption platform. The findings introduce a pathway-engineered strategy for multi-mode phosphorescent materials, paving the way for further materials design for emerging intelligent optoelectronic devices.
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