Radioluminescence from Sm:CaI2 for Scintillator Applications
Abstract
Sm-doped CaI 2 bulk crystals were synthesized by the vertical Bridgman method, and their photoluminescence and radioluminescence properties were systematically investigated.The samples exhibited a broad emission band centered around 870 nm, attributed to the 5d-4f transitions of Sm 2+ .Decay curve analysis revealed the presence of two distinct components: a fast decay component (~0.6 μs) associated with self-trapped excitons, and a slow component (2-4 μs) corresponding to Sm 2+ emission.These results suggest the potential applicability of Sm-doped CaI 2 crystals for photon-counting measurements in the NIR region.
Fields of Study & Subjects
Radiation Detection and Scintillator Technologies
Luminescence Properties of Advanced Materials
Nuclear materials and radiation effects
Publication details
- Journal / source
- Sensors and Materials
- Volume
- 38
- Issue
- 2
- Pages
- 529–529
- Publication date
- 5 February 2026
- Language
- EN