Název:
DEPOSITION OF PVP-PROTECTED PLATINUM NANOPARTICLES ON SEMICONDUCTOR SUBSTRATES FOR HYDROGEN SENSING
Autoři:
Černohorský, Ondřej ; Yatskiv, Roman ; Grym, Jan Typ dokumentu: Příspěvky z konference Konference/Akce: NANOCON 2014. International Conference /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Rok:
2015
Jazyk:
eng
Abstrakt: 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
Klíčová slova:
Graphite based Schottky junction; Hydrogen sensors; PVP - protected Pt nanoparticles Číslo projektu: M100671201 Poskytovatel projektu: GA AV ČR Zdrojový dokument: NANOCON 2014. 6th International conference proceedings, ISBN 978-80-87294-53-6
Instituce: Ústav fotoniky a elektroniky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný na vyžádání prostřednictvím repozitáře Akademie věd. Původní záznam: http://hdl.handle.net/11104/0258108