Work

NIR-Emitting Scintillators Based on CsI Single Crystals

Year: 2025

Type: article

Abstract: The development of efficient scintillators emitting in the red and/or infrared spectral range represents an important scientific challenge, as such materials could find numerous practical applications. This work studies newly grown CsI:Yb,Sm and CsI:Eu,Sm single crystals demonstrating red and infrared luminescence. We measured luminescence spectra in the visible and near-IR range, excitation spectra across visible, UV, VUV, and X-ray ranges, Raman spectra, and thermoluminescence spectra. The results show that divalent europium and ytterbium ions can efficiently transfer excitation to samarium ions. The light output of the obtained crystals under X-ray excitation was roughly estimated from the X-ray luminescence spectra, with expected values of 37,000 photons/MeV for CsI:Yb,Sm and 40,000 photons/MeV for CsI:Eu,Sm.

Source: Crystals

DOI: 10.3390/cryst15060489

Authors: Veronika Gavrilenko, Viktorija Pankratova, Vladimir Pankratov, Ekaterina Kaneva, Roman Shendrik, Dmitriy Sofich

Institutions: Vinogradov Institute of Geochemistry, Institute of Solid State Physics, UL, University of Latvia

Language: English

Topic: Radiation Detection and Scintillator Technologies

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,534

Funders: Siberian Branch, Russian Academy of Sciences, Russian Science Foundation