Vacuum ultraviolet photoconductive detector based on anatase TiO.sub.2./sub. thin film deposited on SiO.sub.2./sub. substrate

Cadatal-Raduban, M.M.; Olejníček, Jiří; Kohout, Michal; Yamanoi, K.; Horiuchi, Y.; Kato, T.; Ono, S.

doi:https://dx.doi.org/10.1016/j.matpr.2022.03.154

Number of the records: 1

Vacuum ultraviolet photoconductive detector based on anatase TiO.sub.2./sub. thin film deposited on SiO.sub.2./sub. substrate

1.

SYSNO ASEP	0566731
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Vacuum ultraviolet photoconductive detector based on anatase TiO₂ thin film deposited on SiO₂ substrate
Author(s)	Cadatal-Raduban, M.M. (NZ) Olejníček, Jiří (FZU-D)_{RID, ORCID} Kohout, Michal (FZU-D)_{RID, ORCID} Yamanoi, K. (JP) Horiuchi, Y. (JP) Kato, T. (JP) Ono, S. (JP)
Number of authors	7
Source Title	Materials Today: Proceedings. Vol. 60. - Amsterdam : Elsevier Ltd., 2022 - ISSN 2214-7853
Pages	s. 1160-1164
Number of pages	5 s.
Publication form	Online - E
Action	International Conference on Science and Engineering of Materials (ICSEM) /4./
Event date	19.07.2021 - 22.07.2021
VEvent location	Noida
Country	IN - India
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	wide band gap ; semiconductor ; TiO₂ ; thin film ; high energy ; detector
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	FV20580 GA MPO - Ministry of Industry and Trade (MPO)
Institutional support	FZU-D - RVO:68378271
UT WOS	000836437200028
EID SCOPUS	85128272667
DOI	10.1016/j.matpr.2022.03.154
Annotation	We report on titanium dioxide (TiO2) thin film deposited on a quartz (SiO2) substrate as an improved photoconductive detector for radiation below 200 nm wavelength (vacuum ultraviolet region, VUV). The crystalline film has an anatase phase and an average crystallite size of 10.6 nm. It has a transmission edge at 322 nm and an optical band gap of 3.18 ± 0.02 eV. Under VUV illumination, the TiO2 photoconductive detector exhibited a photocurrent of 5.3 mA at an applied bias voltage of 100 V. The dark current measured without VUV illumination and at the same bias voltage is 8.8 x 106 mA, which is 6 orders of magnitude smaller compared to the photocurrent. The photoconductive VUV detector based on TiO2 thin film provides a means of directly measuring VUV radiation compared to detection via the photoluminescence of a scintillator.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2023

Number of the records: 1