Effects of alkali earth metal doping on the luminescence and scintillation properties of Cs2HfCl6 single crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00619878" target="_blank" >RIV/68378271:_____/25:00619878 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.radmeas.2025.107438" target="_blank" >https://doi.org/10.1016/j.radmeas.2025.107438</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radmeas.2025.107438" target="_blank" >10.1016/j.radmeas.2025.107438</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of alkali earth metal doping on the luminescence and scintillation properties of Cs2HfCl6 single crystals

Popis výsledku v původním jazyce

In recent years, intrinsic self-trapped exciton (STE) emission materials have been developed as promising scintillators due to their bright and self-absorption free luminescence. Among these materials, cesium hafnium chloride (Cs2HfCl6, CHC) has received attention for its high light yield, remarkable energy resolution, high radiation-stopping capability, absence of radioactive background, and low non-proportionality. This study investigated the luminescence and scintillation properties of both the undoped and alkali earth metals (AE)-doped CHC. The findings revealed that undoped and AE-doped CHC exhibited four emission peaks at 368, 383, 435, and 465 nm, corresponding to intrinsic STE emission, defect-related emission, Zr-related emission, and Irelated emission, respectively. The corresponding decay time were about 1.5, 5.5, 11, and 2.3 μs. Notably, AE doping did not introduce any new emission centers, as confirmed by photoluminescence and radioluminescence spectra. The light yield and energy resolution for undoped CHC and CHC:AE were measured to be 34,000–37,000 ph/MeV and 3.5–4.1 % at 662 keV, respectively. Although AE doping did not enhance scintillation properties of CHC, this study elucidated several sources of luminescence centers in CHC, providing valuable insights for future optimization of its scintillation properties.

Název v anglickém jazyce

Effects of alkali earth metal doping on the luminescence and scintillation properties of Cs2HfCl6 single crystals

Popis výsledku anglicky

In recent years, intrinsic self-trapped exciton (STE) emission materials have been developed as promising scintillators due to their bright and self-absorption free luminescence. Among these materials, cesium hafnium chloride (Cs2HfCl6, CHC) has received attention for its high light yield, remarkable energy resolution, high radiation-stopping capability, absence of radioactive background, and low non-proportionality. This study investigated the luminescence and scintillation properties of both the undoped and alkali earth metals (AE)-doped CHC. The findings revealed that undoped and AE-doped CHC exhibited four emission peaks at 368, 383, 435, and 465 nm, corresponding to intrinsic STE emission, defect-related emission, Zr-related emission, and Irelated emission, respectively. The corresponding decay time were about 1.5, 5.5, 11, and 2.3 μs. Notably, AE doping did not introduce any new emission centers, as confirmed by photoluminescence and radioluminescence spectra. The light yield and energy resolution for undoped CHC and CHC:AE were measured to be 34,000–37,000 ph/MeV and 3.5–4.1 % at 662 keV, respectively. Although AE doping did not enhance scintillation properties of CHC, this study elucidated several sources of luminescence centers in CHC, providing valuable insights for future optimization of its scintillation properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Radiation Measurements

ISSN

1350-4487

e-ISSN

1879-0925

Svazek periodika

184

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

107438

Kód UT WoS článku

001475483800001

EID výsledku v databázi Scopus

2-s2.0-105002698315