Design of a High-Performance Near-Infrared Scintillator through Metal-Atom Substitution in Metal Chalcogenide.

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Pub Date : 2024-11-15 DOI:10.1021/acs.inorgchem.4c03882

Liangwei Yang, Zhuolei Zhang, Rensheng Wang, Menglin Qiu, Yumin Wang, Ming Li, Siyan Huang, Zhidong Wu, Linwei He, Xing Dai, Zhifang Chai, Shuao Wang, Yaxing Wang

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Abstract

We report the synthesis and optical characterization of a series of metal chalcogenides, A₃SiS₄Te (A = Sr²⁺, Ba²⁺, Eu²⁺), highlighting the metal-atom substitution strategy for the discovery of a high-performance metal chalcogenide-based near-infrared (NIR) scintillator of Eu₃SiS₄Te. Eu₃SiS₄Te exhibits exceptionally broad NIR emission with a full width at half-maximum of 210 nm, the largest among all known Eu²⁺-based NIR emitters. Eu₃SiS₄Te has a high light yield of 41697 photons/MeV and excellent resistance to hygroscopicity. Additionally, Eu₃SiS₄Te boasts a decay time of 531.3 ns, which is merely a quarter of that of the current state-of-the-art NIR scintillators. As a proof of concept, the response to the ²⁴¹Am radioactive source was successfully identified, underscoring its potential for γ-photon-counting applications.

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通过金属卤化物中的金属原子置换设计高性能近红外闪烁体

我们报告了一系列金属卤化物 A3SiS4Te（A = Sr2+、Ba2+、Eu2+）的合成和光学特性，重点介绍了发现 Eu3SiS4Te 这种基于金属卤化物的高性能近红外（NIR）闪烁体的金属原子替代策略。Eu3SiS4Te 的近红外发射范围极广，半最大值全宽为 210 nm，是所有已知 Eu2+ 基近红外发射体中最大的。Eu3SiS4Te 的光产率高达 41697 光子/兆电子伏，并具有出色的耐吸湿性。此外，Eu3SiS4Te 的衰减时间为 531.3 ns，仅为目前最先进的近红外闪烁体的四分之一。作为概念验证，成功确定了对 241Am 放射源的响应，突出了其在γ 光子计数应用方面的潜力。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.