期刊
JOURNAL OF LUMINESCENCE
卷 212, 期 -, 页码 1-4出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2019.04.002
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类别
资金
- Dutch Technology Foundation STW, Netherlands Organization for Scientific Research (NWO)
- Ministry of Economic Affairs
- Saint Gobain Crystals, France
The luminescence and scintillation properties of SrI2 single crystals doped with 5% Eu2+ and 0.05%, 0.2% and 0.5% Sm2+ are evaluated. X-ray excited and photoluminescence measurements show energy transfer from excited Eu2+ ions to Sm2+ ions. At a concentration of 0.5% Sm2+, the luminescence consists almost entirely of 740 nm emission from Sm2+ 5d-4f transitions. Co-doping SrI2:5% Eu2+ with Sm2+ provides a novel method to bypass the self-absorption problem encountered in large SrI2:Eu2+ crystals and, at the same time, provides a unique near-infrared emitting scintillator with a light yield of approximately 40,000 photons/MeV.
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