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Semimetal graphite/ZnO Schottky diodes and their use for hydrogen sensing
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SYSNO ASEP 0382124 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Semimetal graphite/ZnO Schottky diodes and their use for hydrogen sensing Author(s) Yatskiv, Roman (URE-Y) RID, ORCID
Grym, Jan (URE-Y)
Žďánský, Karel (URE-Y)
Piksová, K. (CZ)Number of authors 4 Source Title Carbon. - : Elsevier - ISSN 0008-6223
Roč. 50, č. 10 (2012), s. 3928-3933Number of pages 6 s. Language eng - English Country US - United States Keywords Schottky diodes ; ZnO ; Hydrogen sensor Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects OC10021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support URE-Y - RVO:67985882 UT WOS 000305851700066 DOI https://doi.org/10.1016/j.carbon.2012.04.047 Annotation A method is described for the fabrication of highly rectifying Schottky contacts on n-type ZnO (O and Zn polar face) single crystals, both bare and partially covered with Pt nanoparticles, coated with mechanically deposited colloidal graphite. A layer of Pt nanoparticles deposited by in-situ pulsed electrophoretic deposition from isooctane colloid solutions is inserted between the graphite and the ZnO surface serves to dissociate hydrogen molecules in hydrogen sensing elements based on the highly rectifying Schottky barriers. The sensing elements are sensitive to gas mixtures with a low hydrogen concentration down to 10 ppm and show an extremely fast response above 1000 ppm. Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2013
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