全无机零维 Sb 掺杂 RbScCl(HO) 钙钛矿单晶：高效自陷激子发射和 X 射线探测。
All-Inorganic Zero-Dimensional Sb-Doped RbScCl(HO) Perovskite Single Crystals: Efficient Self-Trapped Exciton Emission and X-ray Detection.
机构信息
Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
出版信息
J Phys Chem Lett. 2023 Feb 16;14(6):1521-1527. doi: 10.1021/acs.jpclett.2c03912. Epub 2023 Feb 6.
Zero-dimensional (0D) halide perovskites have attracted extensive attention for their potential applications in solid-state lighting and X-ray detection due to their fascinating optoelectronic properties and convenient solution processability. Herein, we report the synthesis and photophysical properties of high-quality Sb-doped 0D RbScCl(HO) perovskite single crystals. The pristine crystals exhibit weak yellow self-trapped exciton (STE) emission peaking at 632 nm. The emission quantum yield can be dramatically enhanced from less than 1% to about 53% via Sb doping. Spectroscopic characterizations indicate that the photoluminescence enhancement is a result of the efficient energy transfer from Sb to the emissive STEs. Additionally, 0.2%Sb:RbScCl(HO) single crystals exhibit potential application in direct X-ray detection with a high sensitivity of 58.5 μC Gy cm.
零维（0D）卤化物钙钛矿由于其迷人的光电性能和方便的溶液处理能力，在固态照明和 X 射线检测方面引起了广泛关注。在此，我们报告了高质量 Sb 掺杂 0D RbScCl(HO) 钙钛矿单晶的合成和光物理性质。原始晶体表现出较弱的黄色自陷激子（STE）发射，峰值位于 632nm。通过 Sb 掺杂，发射量子产率可以从不到 1%显著提高到约 53%。光谱特性表明，光致发光增强是 Sb 向发射 STE 有效能量转移的结果。此外，0.2%Sb:RbScCl(HO) 单晶在直接 X 射线检测方面具有应用潜力，其灵敏度高达 58.5μC Gy cm。
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