Optical and electrical characterization of CuO/ZnO heterojunctions

0525319 - ÚFE 2021 RIV CH eng J - Journal Article
Yatskiv, Roman - Tiagulskyi, Stanislav - Grym, Jan - Vaniš, Jan - Bašinová, Nikola - Horák, Pavel - Torrisi, Alfio - Ceccio, Giovanni - Vacík, Jiří - Vrňata, M.
Optical and electrical characterization of CuO/ZnO heterojunctions.
Thin Solid Films. Roč. 693, JAN 1 (2020), č. článku 137656. ISSN 0040-6090. E-ISSN 1879-2731.
[10th International Conference on Hot Wire (Cat) and Initiated Chemical Vapor Deposition (HWCVD). Kitakyushu, 03.09.2018-06.09.2018]
R&D Projects: GA ČR GA19-02804S
Institutional support: RVO:67985882 ; RVO:61389005
Keywords : Hybrid heterojunction * Hydrogen sensor * Copper oxide * Impedance spectroscopy
OECD category: Nano-materials (production and properties); Nano-materials (production and properties) (UJF-V)
Impact factor: 2.183, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.tsf.2019.137656

CuO/ZnO p-n heterojunctions are fabricated on ZnO nanorod arrays by sputtering of metallic Cu thin films and by their subsequent thermal annealing at 400 degrees C. Structural, morphological, and optical properties of both copper oxide nanocrystalline films and zinc oxide nanorod arrays are discussed with the emphasis on the electrical junction properties investigated by current-voltage and impedance spectroscopy measurements. Electrical characteristics of these junctions are sensitive to gas mixtures with a low hydrogen concentration and show fast response and recovery time. The copper oxide/zinc oxide heterojunctions are shown to be more efficient to hydrogen detection at room temperature in comparison with the resistivity sensors based on zinc or copper oxides
Permanent Link: http://hdl.handle.net/11104/0309492