liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
The influence of CO on the response of hydrogen sensitive Pd-MOS devices
Linköping University, Department of Physics, Chemistry and Biology, Chemical and Optical Sensor Systems. Linköping University, Faculty of Science & Engineering. (Tillämpad Fysik)ORCID iD: 0000-0002-0873-2877
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
1997 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 42, no 3, 217-223 p.Article in journal (Refereed) Published
Abstract [en]

In order to understand and correctly interpret the response of chemical sensors under measurement conditions, detailed studies of molecule—sensor interactions under well-controlled conditions are needed. In this work, the influence of CO on the response of a hydrogen sensitive Pd—metal-oxide-semiconductor (Pd—MOS) device with a dense Pd film is studied in ultrahigh vacuum (UHV). The results show that although CO by itself does not induce any response of the device, CO may have a significant influence on the hydrogen response, especially so in the presence of oxygen. It is also shown that high CO coverages on the Pd surface increases the time needed to obtain equilibrium between the gas phase hydrogen pressure and the response of the Pd—MOS device. This is due to a CO induced increase of the activation energies of the dissociation and association processes for hydrogen. The effect on the hydrogen response is small for CO coverages below 0.2 monolayers and increases dramatically above this coverage.

Place, publisher, year, edition, pages
1997. Vol. 42, no 3, 217-223 p.
National Category
Analytical Chemistry
URN: urn:nbn:se:liu:diva-118344DOI: 10.1016/S0925-4005(97)80338-3OAI: diva2:814500
Available from: 2015-05-27 Created: 2015-05-27 Last updated: 2015-06-08

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Eriksson, MatsEkedahl, Lars-Gunnar
By organisation
Chemical and Optical Sensor SystemsFaculty of Science & EngineeringDepartment of Physics, Chemistry and BiologyThe Institute of Technology
In the same journal
Sensors and actuators. B, Chemical
Analytical Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 124 hits
ReferencesLink to record
Permanent link

Direct link