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Red–NIR Scintillation in Sm-Doped Mixed-Anion SrCl0.4Br1.6
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DOI：10.1016/j.optmat.2026.118254.png)
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Abstract
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• Sm-doped SrCl0.4Br1.6 was synthesized to develop a high-performance red–NIR-emitting scintillator. • SrCl0.4Br1.6:Sm exhibited intense red–NIR emission originating from the 5d–4f transitions of Sm2+. • A high LY of 47,000 photons/MeV was achieved for SrCl0.4Br1.6 containing 0.1 mol% Sm. • The scintillation decay times of SrCl0.4Br1.6:Sm were shorter than those of SrCl2:Sm2+ and SrBr2:Sm2+. • The mixed-anion strategy effectively enhances both LY and decay performance, enabling the development of a higher-performance red–NIR-emitting scintillator.
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