Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00597810" target="_blank" >RIV/68378271:_____/24:00597810 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0355634" target="_blank" >https://hdl.handle.net/11104/0355634</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41377-024-01532-z" target="_blank" >10.1038/s41377-024-01532-z</a>
Alternative languages
Result language
angličtina
Original language name
Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides
Original language description
Materials for radiation detection are critically important and urgently demanded in diverse fields, starting from fundamental scientific research to medical diagnostics, homeland security, and environmental monitoring. Low-dimensional halides (LDHs) exhibiting efficient self-trapped exciton (STE) emission with high photoluminescence quantum yield (PLQY) have recently shown a great potential as scintillators. However, an overlooked issue of exciton-exciton interaction in LDHs under ionizing radiation hinders the broadening of its radiation detection applications. Here, we demonstrate an exceptional enhancement of exciton-harvesting efficiency in zero-dimensional (0D) Cs3Cu2I5:Tl halide single crystals by forming strongly localized Tl-bound excitons. Because of the suppression of non-radiative exciton-exciton interaction, an excellent α/β pulse-shape-discrimination (PSD) figure-of-merit (FoM) factor of 2.64, a superior rejection ratio of 10−9, and a high scintillation yield of 26 000 photons MeV−1 under 5.49 MeV α-ray are achieved in Cs3Cu2I5:Tl single crystals, outperforming the commercial ZnS:Ag/PVT composites for charged particle detection applications. Furthermore, a radiation detector prototype based on Cs3Cu2I5:Tl single crystal demonstrates the capability of dentifying radioactive 220Rn gas for environmental radiation monitoring applications. We believe that the exciton-harvesting strategy proposed here can greatly boost the applications of LDHs materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/EF16_019%2F0000760" target="_blank" >EF16_019/0000760: Solid State Physics for 21st century</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Light-Science & Applications
ISSN
2095-5545
e-ISSN
2047-7538
Volume of the periodical
13
Issue of the periodical within the volume
1
Country of publishing house
CN - CHINA
Number of pages
12
Pages from-to
190
UT code for WoS article
001290246400001
EID of the result in the Scopus database
2-s2.0-85201265736