Graphite/n-InP Schottky barrier with electrophoretically deposited Pt nanoparticles for hydrogen and nitrogen-monoxide detection

0387602 - ÚFE 2013 RIV CZ eng C - Conference Paper (international conference)
Žďánský, Karel - Vaniš, Jan - Černohorský, Ondřej - Kacerovský, Pavel - Fojtík, A.
Graphite/n-InP Schottky barrier with electrophoretically deposited Pt nanoparticles for hydrogen and nitrogen-monoxide detection.
NANOCON 2012, 4th International Conference Proceedings. Ostrava: TANGER Ltd, 2012. ISBN 978-80-87294-32-1.
[NANOCON 2012. International Conference /4./. Brno (CZ), 23.10.2012-25.10.2012]
Institutional support: RVO:67985882
Keywords : semiconductor devices * nanostructures * sensors
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

N-type InP was deposited with Pt nanoparticles (NPs) by electrophoresis. The Pt NPs density was varied from a tenth of monolayer to several monolayers. Schottky contacts were made by colloidal graphite on the InP wafer site covered with Pt NPs. It was observed that H2 was detected by an increase of the current while NO was detected by its decrease. For explanation, we discuss mechanism which involves negative charging of adsorbed H atoms with electrons by increasing affinity level due to correlation efects
Permanent Link: http://hdl.handle.net/11104/0219995