Original title: Plasma hydrogenation of hydrothermally grown ZnO micropods
Authors: Remeš, Zdeněk ; Aubrechtová Dragounová, Kateřina ; Mičová, J.
Document type: Papers
Conference/Event: International Conference NANOCON 2020 /12./, Brno (CZ), 20201021
Year: 2021
Language: eng
Abstract: The hydrothermally grown ZnO micropods have been placed on grounded stainless-steel holder and exposed to an inductively coupled plasma (ICP) monitored in-situ by optical emission spectroscopy (OES). OES shows the immediate release of oxygen during Ar ion bombardment. The prolonged exposure to hydrogen plasma leads to deterioration of the optical properties as well. The exposure, rf power and hydrogen pressure have been optimized to enhance UV-photoluminescence peak at the wavelength 384 nm related to surface bounded excitons and reduce the defect-related photoluminescence in red spectral range. The strong UV photoluminescence appears just after 1 minute of plasma hydrogenation in a radio frequency plasma discharge with power density 40 W/dm3 and hydrogen pressure 17 Pa.
Keywords: inductively coupled plasma; infrared absorption spectroscopy; micropods; optical emission spectroscopy; photoluminescence spectroscopy; Raman spectroscopy; ZnO
Project no.: CZ.02.1.01/0.0/0.0/16_019/0000760, EF16_019/0000760, GC19-02858J (CEP)
Funding provider: OP VVV - SOLID21, GA MŠk, GA ČR
Host item entry: Proceedings 12th International Conference on Nanomaterials - Research & Application - Nanocon 2020, ISBN 978-80-87294-98-7, ISSN 2694-930X

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0319854

Permalink: http://www.nusl.cz/ntk/nusl-438873


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