Hydrothermally grown molybdenum doped ZnO nanorod arrays. The concept of novel ultrafast nanoscintillator

0578746 - FZÚ 2024 RIV NL eng J - Journal Article
Buryi, Maksym - Neykova, Neda - Brik, M.G. - Wang, Yu-Min - Remeš, Zdeněk - Ridzoňová, Katarína - Babin, Vladimir - Davydova, Marina - Drahokoupil, Jan - Chertopalov, Sergii - Landová, Lucie - Pop-Georgievski, Ognen
Hydrothermally grown molybdenum doped ZnO nanorod arrays. The concept of novel ultrafast nanoscintillator.
Optical Materials. Roč. 145, Nov. (2023), č. článku 114445. ISSN 0925-3467. E-ISSN 1873-1252
R&D Projects: GA ČR(CZ) GJ20-05497Y; GA MŠMT(CZ) 8X23025
Institutional support: RVO:68378271 ; RVO:61389013
Keywords : ZnO nanorods * molybdenum doping * exciton emission * ultrafast luminescence * electron paramagnetic resonance
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Polymer science (UMCH-V)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.optmat.2023.114445

Molybdenum doped ZnO was hydrothermally grown as the arrays of nanorods deposited onto the fused silica glass substrate. The molybdenum doping level varied from 1 to 30%. The tendency of Mo to create energy states within the bandgap of ZnO and theirinfluence on the energy levels of native defects as well as excitons were proven by the synergy ofexperiment and theory. The improvement of the timing characteristics of the exciton- and zincvacancy-related emission bands upon Mo doping (1-10%) was observed. This paves the way for the defect engineering strategy in the search of effective and ultrafast scintillator with the improved lightyield as well as compared to other materials. The new concept is based on the combination of theexciton and the defect emission. It is expected to have the potential of application in the detection ofgamma rays implemented in time-of-flight positron emission tomography (TOFPET).
Permanent Link: https://hdl.handle.net/11104/0348451