Ultrabroadband-Emissive Lanthanide Chalcogenide for X-ray Scintillation
We report herein the synthesis and optical properties of a lanthanide chalcogenide scintillator, CeCsSiS<sub>4</sub>, which crystallizes in the orthorhombic space group <i>Pnma</i> and adopts a two-dimensional layered structure. CeCsSiS<sub>4</sub> exhibits ultrabroadband emission spanning 400-950 nm with a record full width at half-maximum (fwhm) of 207.3 nm among Ce<sup>3+</sup>-based inorganic emitters. The emission originates from the combined contributions of the Ce<sup>3+</sup>-5d → 4f transition and Ce-5d → S-3p charge-transfer transitions. The material shows a high photoluminescence quantum yield of 51.6%, a fast decay time of 26.4 ns, strong X-ray radioluminescence, and excellent radiation and moisture stability, demonstrating promise for robust X-ray detection.
Authors
- Liangwei Yang (ORCID: https://orcid.org/0000-0001-5660-766X)
- Shuao Wang (ORCID: https://orcid.org/0000-0002-1526-1102)
- Siyan Huang (ORCID: https://orcid.org/0000-0002-3629-2397)
- Yunpu Zhang (ORCID: https://orcid.org/0009-0002-3257-3770)
- Zhidong Wu (ORCID: https://orcid.org/0009-0009-9082-8234)
- Junren Wang (ORCID: https://orcid.org/0000-0001-6612-1671)
- Mengmeng Zhao (ORCID: https://orcid.org/0000-0003-4143-3606)
- Ming Li (ORCID: https://orcid.org/0000-0002-2289-0222)
- Yumin Wang (ORCID: https://orcid.org/0000-0001-7023-7159)
- Zhengjun Liu (ORCID: https://orcid.org/0000-0003-2886-8496)
- Yaxing Wang (ORCID: https://orcid.org/0000-0002-1842-339X)
- Zhifang Chai (ORCID: https://orcid.org/0000-0002-8754-7468)
- Tao Tang (ORCID: https://orcid.org/0000-0002-7968-9300)
- Hailong Zhang (ORCID: https://orcid.org/0009-0008-1489-7708)
Institutions
- PLA Information Engineering University (CN)
- Soochow University (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-12-04
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c04768
- Primary Topic
- Radiation Detection and Scintillator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00