Hydrothermally grown ZnO:Mo nanorods exposed to X-ray: Luminescence and charge trapping phenomena

0556760 - FZÚ 2023 RIV NL eng J - Článek v odborném periodiku
Buryi, Maksym - Babin, Vladimir - Artemenko, Anna - Remeš, Zdeněk - Děcká, Kateřina - Mičová, J.
Hydrothermally grown ZnO:Mo nanorods exposed to X-ray: Luminescence and charge trapping phenomena.
Applied Surface Science. Roč. 585, May (2022), č. článku 152682. ISSN 0169-4332. E-ISSN 1873-5584
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; AV ČR(CZ) StrategieAV21/6
Program: Bilaterální spolupráce; StrategieAV
Výzkumná infrastruktura: CzechNanoLab - 90110
Institucionální podpora: RVO:68378271
Klíčová slova: ZnO nanorods * Mo doping * defects * exciton emission * luminescence * EPR
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 6.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.apsusc.2022.152682

Peculiarities of the point defects creation under X-ray irradiation and the influence of Mo doping in ZnO powders of nano-and microrods fabricated by the hydrothermal growth method (as-grown and annealed in air) were studied in detail. Correlated experiments of X-ray diffraction, X-ray photoelectron spectroscopy, electron para-magnetic resonance, photo-and radioluminescence as well as thermally stimulated luminescence allowed us to trace the effect of the molybdenum inclusion on the phase purity of synthesized materials and the role of Mo in the creation of X-ray induced point defects. Oxygen-based hole trapping centers (most probably involving interstitial oxygen) as well as Mo5+-based electron trapping centers were observed and their thermal stabilities were studied. Some amount of the hole trapping centers seemed to be directly connected with the creation of Mo5+. Zinc vacancies and the Mo5+ centers up to some extent were assumed to act as recombination centers for the holes released from the hole trapping centers.
Trvalý link: http://hdl.handle.net/11104/0330942