Original title: DEPOSITION OF PVP-PROTECTED PLATINUM NANOPARTICLES ON SEMICONDUCTOR SUBSTRATES FOR HYDROGEN SENSING
Authors: Černohorský, Ondřej ; Yatskiv, Roman ; Grym, Jan
Document type: Papers
Conference/Event: NANOCON 2014. International Conference /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Year: 2015
Language: eng
Abstract: High quality Schottky diode hydrogen sensors were prepared by the deposition of colloidal graphite on n-type InP substrates partly covered with PVP-protected Pt nanoparticles (NPs). A sub-monolayer of the Pt NPs was created by simple evaporation of the solvent in which Pt NPs were dispersed. The Pt NPs serve to dissociate hydrogen molecules into atomic hydrogen, which is absorbed at the metal-semiconductor interface. Hydrogen absorption leads to the formation of the dipole layer, which changes the Schottky barrier height and results in the increase of both forward and reverse current. The proposed hydrogen sensor showed high sensitivity response of similar to 10(6) to 1000 ppm H-2 in N-2 at room temperature
Keywords: Graphite based Schottky junction; Hydrogen sensors; PVP - protected Pt nanoparticles
Project no.: M100671201
Funding provider: GA AV ČR
Host item entry: NANOCON 2014. 6th International conference proceedings, ISBN 978-80-87294-53-6

Institution: Institute of Photonics and Electronics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0258108

Permalink: http://www.nusl.cz/ntk/nusl-203197


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Research > Institutes ASCR > Institute of Photonics and Electronics
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