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Room temperature plasma hydrogenation – an effective way to suppress defects in ZnO nanorods
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SYSNO ASEP 0539107 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Room temperature plasma hydrogenation – an effective way to suppress defects in ZnO nanorods Author(s) Remeš, Zdeněk (FZU-D) RID, ORCID
Buryi, Maksym (FZU-D) RID, ORCID
Neykova, Neda (FZU-D) RID, ORCID
Stuchlík, Jiří (FZU-D) RID, ORCID
Mičová, J. (SK)
Hsu, H.S. (TW)Number of authors 6 Source Title Materials Today: Proceedings. - : Elsevier
Roč. 33, č. 6 (2020), s. 2481-2483Number of pages 3 s. Language eng - English Country NL - Netherlands Keywords ZnO nanorods ; EPR ; photoluminescence ; F+ center ; exciton emission ; plasma hydrogenation Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Nano-materials (production and properties) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GC19-02858J GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000599991700012 DOI 10.1016/j.matpr.2020.02.758 Annotation The densely packed, perpendicularly oriented ZnO nanorods were hydrothermally grown in dark and under UV irradiation on fused silica glass substrates seeded by ZnO nanocrystals. The exciton-related UV photoluminescence observed at room temperature at 380 nm increased significantly after a room temperature hydrogen plasma treatment in a negatively self-biased capacitive coupled radio frequency reactor whereas the defect-related yellow photoluminescence was noticeably reduced together with the F+ electron paramagnetic resonance (EPR) signal g = 1.96. Thus, the F+ EPR signals are surface type defects which amount is governed by the surface plasma treatment. The correlation between PL and EPR signals observed in ZnO nanorods exposed to the same treatment relates some optically active defects to paramagnetic centers. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1016/j.matpr.2020.02.758
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