Titanium dioxide thin films as vacuum ultraviolet photoconductive detectors with enhanced photoconductivity by gamma-ray irradiation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00552194" target="_blank" >RIV/68378271:_____/21:00552194 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.tsf.2021.138637" target="_blank" >https://doi.org/10.1016/j.tsf.2021.138637</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tsf.2021.138637" target="_blank" >10.1016/j.tsf.2021.138637</a>
Alternative languages
Result language
angličtina
Original language name
Titanium dioxide thin films as vacuum ultraviolet photoconductive detectors with enhanced photoconductivity by gamma-ray irradiation
Original language description
We show that titanium dioxide (TiO2) thin films can be used as photoconductive detectors of vacuum ultraviolet (VUV) radiation, with further improvement in performance after recovery from gamma ray irradiation. An initial decrease in photocurrent was observed after irradiation with 3.4 kilo gray gamma rays as oxygen vacancies and trivalent titanium ion states are formed as confirmed by optical and photoluminescence spectroscopies showing a red-shift in the transmission edge, narrowing of the optical band gap, and appearance of a broad absorption band in the 392-528 nm wavelength range. Subsequent recovery of these defects increased the photoconductivity beyond what was displayed by the pristine detector. After recovering, the photosensitivity of the detector increased by a factor of about 8 and 124 compared to its photosensitivity before and immediately after irradiation, respectively.
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)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Thin Solid Films
ISSN
0040-6090
e-ISSN
1879-2731
Volume of the periodical
726
Issue of the periodical within the volume
May
Country of publishing house
CH - SWITZERLAND
Number of pages
7
Pages from-to
138637
UT code for WoS article
000640908300002
EID of the result in the Scopus database
2-s2.0-85103380834