The photoluminescence and optical absorptance of plasma hydrogenated nanocrystalline ZnO thin films

0522081 - FZÚ 2020 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Remeš, Zdeněk - Chang, Yu-Ying - Stuchlík, Jiří - Mičová, J.
The photoluminescence and optical absorptance of plasma hydrogenated nanocrystalline ZnO thin films.
NANOCON 2018 : Conference Proceedings of the International Conference on Nanomaterials - Research & Application /10./. Ostrava: Tanger Ltd., 2019 - (Shrbená, J.), s. 78-82. ISBN 978-80-87294-89-5.
[NANOCON 2018 -International Conference on Nanomaterials - Research and Application /10./. Brno (CZ), 17.10.2018-19.10.2018]
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT(CZ) LTC17029; GA ČR GC16-10429J
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: nanomaterials * ZNO * photoluminescence * magnetron sputtering
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

We have developed the technology of the deposition of the nominally undoped ZnO nanocrystalline thin films by DC reactive magnetron sputtering of Zn target in the gas mixture of argon and oxygen plasma. We have optimized the photoluminescence spectroscopy for measuring optically scattering thin layers with the high sensitivity, precise sample positioning and very low influence of the scattered excitation light. Here we present the latest results on the enhancement of the photoluminescence of the nanocrystalline ZnO thin films after plasma hydrogenation. The photoluminescence in near UV region has been enhanced whereas the deep defect related photoluminescence has been significantly decreased. We found good room temperature stability of the plasma hydrogenated ZnO nanocrystals in air, but fast degradation at elevated temperature

Trvalý link: http://hdl.handle.net/11104/0306582