Enhanced room temperature exciton photoluminescence of plasma hydrogenated ZnO nanocolumns

0520360 - FZÚ 2020 RIV GB eng C - Conference Paper (international conference)
Remeš, Zdeněk - Chang, Yu-Ying - Stuchlík, Jiří - Neykova, Neda - Souček, J. - Hsu, H.S.
Enhanced room temperature exciton photoluminescence of plasma hydrogenated ZnO nanocolumns.
IOP Conference Series: Materials Science and Engineering. Vol. 465. Bristol: IOP Publishing Ltd, 2019, s. 1-7, č. článku 012008. ISSN 1757-8981.
[Joint Seminar on Development of Materials Science in Research and Education /28./ DMSRE 2018. Pavlov (CZ), 03.09.2018-07.09.2018]
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT(CZ) LTC17029; GA ČR GC16-10429J
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : ZnO * nanoparticles * photoluminescence * excitons
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

Zinc oxide (ZnO) nanocolumns have interesting material properties such as the direct band gap, tunable electrical conductivity, high optical transparency, high thermal conductivity, and large surface to volume ratio. Here we present the latest results on the enhancement of the infrared optical absorptance and ultraviolet photoluminescence in ZnO nanocolumns after hydrogen plasma treatment. The photoluminescence in near UV region at 378 nm has been significantly enhanced by hydrogen plasma treatment at roo temperature whereas the defect related yellow photoluminescence (broad band 550–650 nm) decreased.
Permanent Link: http://hdl.handle.net/11104/0305042