Charge traps in Zn- and Mo-based oxide microstructures. The role of Mo

0567271 - FZÚ 2023 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Buryi, Maksym - Ridzoňová, Katarína - Artemenko, Anna - Děcká, Kateřina - Landová, Lucie - Remeš, Zdeněk - Mičová, J.
Charge traps in Zn- and Mo-based oxide microstructures. The role of Mo.
Journal of Physics: Conference Series. Vol. 2413. Bristol: IOP Publishing, 2022, č. článku 012007. ISSN 1742-6588.
[DMSRE seminar: Development of Materials Science in Research and Education (DMSRE) /31./. Nová Lesná (SK), 05.09.2022-09.09.2022]
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GJ20-05497Y
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760; AV ČR(CZ) SAV-21-09
Program: Bilaterální spolupráce
Výzkumná infrastruktura: CzechNanoLab - 90110
Institucionální podpora: RVO:68378271
Klíčová slova: ZnO * MoO₃ * EPR
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

Peculiarities of the point defects creation under the X-ray irradiation and the influence of Mo doping in ZnO: Mo (10 and 30%) and MoO3 micro-powders fabricated by the hydrothermal growth method were studied in detail. It has been found that some new phases other than ZnO are created upon the heavy molybdenum doping. They were tentatively ascribed to complex zinc molybdates existing in the form of platelet flakes. The MoO3 sample contained both hydrated and anhydrous MoO3 phases in the form of microneedles. The molybdenum charge state was Mo6+ before X-ray irradiation in all the materials. X-ray irradiation resulted in creation of molybdenum- and oxygen-based charge trapping centres, i.e., Mo5+ and O- or O2-. Part of them is expected to exist in the pure ZnO and MoO3 phases whereas the rest must appear in the complex zinc molybdates.
Trvalý link: https://hdl.handle.net/11104/0338543