Temperature enhanced gas sensing properties of diamond films

0385068 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Davydova, Marina - Stuchlík, M. - Rezek, Bohuslav - Kromka, Alexander
Temperature enhanced gas sensing properties of diamond films.
Vacuum. Roč. 86, č. 6 (2012), s. 599-602. ISSN 0042-207X. E-ISSN 1879-2715
Grant CEP: GA AV ČR KAN400100701; GA MŠMT LC510; GA AV ČR(CZ) IAAX00100902
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: nanocrystalline diamond * phosgene * surface conductivity * gas sensor * SEM
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.530, rok: 2012

Nanocrystalline diamond (NCD) film was used as a functional part of gas sensor. The gas sensing properties of H-terminated nanocrystalline diamond films were examined to oxidizing gases (i.e., COCl2 and humid air). Pronounced increase in the surface conductivity (3 orders of magnitude) was found after sensor exposure to phosgene gas and was explained by the surface transfer doping effect. We also present a possible way how to achieve sensor selectivity, i.e. how to distinguish between phosgene and humid air (the mostly present background gas in a common environment).
Trvalý link: http://hdl.handle.net/11104/0214465