Highly stable hybrid antimony(Ⅲ) halide single crystal scintillator with self-trapped excitons emission for X-ray detection

IF 3.6 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2025-06-01 Epub Date: 2025-03-10 DOI:10.1016/j.jlumin.2025.121182

Xiaohui Chi , Yunyun Li , Wen Li , Jiajie Zhu , Huixin Xiu , Yuntao Wu

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Abstract

X-ray detection scintillators have attracted widespread attention due to their vital application in the fields of medical diagnostics, security inspections and industrial non-destructive testing. Hybrid antimony(Ⅲ) halides have emerged as potential candidates due to high photoluminescence quantum yield (PLQY), superb stability, and excellent solution processability. Here, zero-dimensional (0D) organic-inorganic hybrid halide scintillator CTP₂SbCl₅ (CTP = (2-chlorobenzyl)triphenylphosphonium) single crystals are prepared by a solution-based slow cooling crystallization method. CTP₂SbCl₅ crystals exhibit bright yellow broadband emission centered at 625 nm with a high PLQY of 57.6 %. Importantly, CTP₂SbCl₅ possesses comprehensive scintillation performance, including a light yield of 8700 photons MeV⁻¹, low afterglow and detection limit of 134.2 nGy_air s⁻¹, along with excellent irradiation and environmental stability. The results suggest that CTP₂SbCl₅ has great potential in the field of X-ray detection and imaging.

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高稳定杂化锑（Ⅲ）卤化物单晶闪烁体，具有自捕获激子发射，用于x射线探测

x射线探测闪烁体在医学诊断、安全检查和工业无损检测等领域的重要应用引起了人们的广泛关注。由于高光致发光量子产率（PLQY）、优异的稳定性和优异的溶液可加工性，杂化锑卤化物（Ⅲ）已成为潜在的候选者。本文采用溶液缓慢冷却结晶法制备了零维（0D）有机-无机杂化卤化物闪烁体CTP2SbCl5 （CTP =（2-氯苯基）三苯基磷）单晶。CTP2SbCl5晶体表现出以625 nm为中心的亮黄色宽带发射，PLQY高达57.6%。重要的是，CTP2SbCl5具有全面的闪烁性能，包括8700光子MeV−1的产光量，低余辉和134.2 nGyair s−1的检测限，以及出色的辐照和环境稳定性。结果表明，CTP2SbCl5在x射线探测和成像领域具有很大的潜力。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.