Characterisation of defects in ZnO implanted by hydrogen

0471772 - ÚJF 2017 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Procházka, I. - Čížek, J. - Valenta, J. - Havránek, Vladimír - Hruška, P. - Novotný, Michal - Lančok, Ján
Characterisation of defects in ZnO implanted by hydrogen.
Defect and Diffusion Forum. Vol. 365. Zürich: Trans Tech Publications, 2015, s. 49-54. ISBN 978-303835516-8. ISSN 1012-0386.
[10th International Conference on Diffusion in Solids and Liquids, Mass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials (DSL 2014). Paris (FR), 23.06.2014-27.06.2014]
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: neutron diffraction * metallurgy * residual stress * mechanical testing
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače; BM - Fyzika pevných látek a magnetismus (FZU-D)

In the present work, defects created by implantation of hydrothermally grown ZnO single crystals of high quality with H+ ions were investigated by positron annihilation lifetime (LT) spectroscopy combined with measurements of optical transmittance (OT) and photoluminescence (PL). First, zinc vacancies attached with one hydrogen impurity (VZn - 1H) atom were identified in the virgin ZnO single crystal. The ZnO single crystals were then bombarded by H+ ions with the energy of 2.5 MeV to the fluence of 1016 cm-2. It was found that VZn - VO divacancies were introduced into ZnO by H+-implantation. Effects of H+-implantation on the optical activity of defects in ZnO lattice are characterised in the light of the present OT and PL data.
Trvalý link: http://hdl.handle.net/11104/0269097