Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide
Result description
Tellurite glasses of the compositions TeO2(60%)-ZnO(40%) and TeO2(60%)-ZnO(20%)-BaO(20%) were prepared in the bulk form with following grinding into powders. The samples were X-ray irradiated. The created charge trapping centers were studied in both types of samples using electron paramagnetic resonance (EPR) spectroscopy. The O- defect and two types of F+ centers were discovered. One of the F+ center remained unchanged whereas the other one as well as the O- defect were affected by the presence of BaO. Moreover, photo-, radioand thermoluminescence (PL, RL, TL, respectively) methods were applied as well. The discovered charge trapping centers have been proven to influence luminescence properties as well - improving them in the TeO2(60%)ZnO(40%) and vice versa degrading them in the TeO2(60%)-ZnO(20%)-BaO(20%) glasses. The effect was even stronger in the grinded samples as compared to the bulk ones. The role of the BaO has been disclosed as supporting oxygen leakage from the host.
Keywords
TeO2-ZnO-BaOElectron paramagnetic resonancePhotoluminescenceRadioluminescenceThermoluminescenceCharge-trapping centers
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68407700:21340/23:00367711 RIV/00216208:11320/23:10468858 RIV/60461373:22310/23:43927938
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide
Original language description
Tellurite glasses of the compositions TeO2(60%)-ZnO(40%) and TeO2(60%)-ZnO(20%)-BaO(20%) were prepared in the bulk form with following grinding into powders. The samples were X-ray irradiated. The created charge trapping centers were studied in both types of samples using electron paramagnetic resonance (EPR) spectroscopy. The O- defect and two types of F+ centers were discovered. One of the F+ center remained unchanged whereas the other one as well as the O- defect were affected by the presence of BaO. Moreover, photo-, radioand thermoluminescence (PL, RL, TL, respectively) methods were applied as well. The discovered charge trapping centers have been proven to influence luminescence properties as well - improving them in the TeO2(60%)ZnO(40%) and vice versa degrading them in the TeO2(60%)-ZnO(20%)-BaO(20%) glasses. The effect was even stronger in the grinded samples as compared to the bulk ones. The role of the BaO has been disclosed as supporting oxygen leakage from the host.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Non-Crystalline Solids
ISSN
0022-3093
e-ISSN
1873-4812
Volume of the periodical
620
Issue of the periodical within the volume
NOV
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
122596
UT code for WoS article
001072019900001
EID of the result in the Scopus database
2-s2.0-85169797288
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Materials engineering
Year of implementation
2023