Toggle navigation
Search
Browse
EKT item types
Institutions
Collections
Interoperability
Info
The project
Help
For institutions
Contribute
Publication Requirements
Expression of Interest Form
Contact
ΕΛ
•
ΕΝ
In all fields
Subject
Type
Location
Title
Time
Creator/contributor
×
+
Search
Clear
Help
A model for the gas sensing properties of tin oxide thin films with surface catalysts
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
see the original item page
in the repository's web site and access all digital files if the item
*
share
Semantic enrichment by EKT
ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1995
(EN)
EKT historical period
Title
A model for the gas sensing properties of tin oxide thin films with surface catalysts (EN)
Creator
Papadopoulos, CA (EN)
Avaritsiotis, JN (EN)
Description
The effect of two types of surface additives (Pd and Pt) on the response of reactively sputtered thin films of SnOx gas sensors has been studied, in mixtures of zero grade air and carbon monoxide. The experimental results obtained with surface additives show an abrupt conductance increase around 500 K when carbon monoxide in the ppm range is present, a behaviour which has not been observed with plain SnOx films. A semi-empirical model that explains this behaviour is presented, that is based on the well-established theory for the conductivity of ultrathin discontinuous metal films, i.e. activated charge carrier creation and tunnelling through potential barriers. The proposed model takes into account the dependence of film conductivity both on the thickness of the noble metal deposited on it and on the working temperature. The results of the theoretical analysis are in excellent qualitative agreement with the experimental ones. © 1995. (EN)
Type
journalArticle (EN)
Subject
Tin compounds (EN)
Chemical sensors (EN)
Additives (EN)
Zero grade air (EN)
Instruments & Instrumentation (EN)
Chemistry, Analytical (EN)
Ultrathin discontinuous metal films (EN)
Thin films (EN)
Surface additives (EN)
Magnetron sputtering (EN)
Numerical analysis (EN)
Tin oxide thin films (EN)
Conductance of metal films (EN)
Electrochemistry (EN)
Metallic films (EN)
Noble metal (EN)
Mathematical models (EN)
Carbon monoxide (EN)
Deposition (EN)
Electric conductivity (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
Sensors and Actuators: B. Chemical (EN)
Language
English
Issued
1995 (EN)
Identifier
http://hdl.handle.net/123456789/11421
0925-4005 (EN)
210 (EN)
3 (EN)
201 (EN)
10.1016/0925-4005(95)01728-3 (EN)
ISI:A1995TD06500005 (EN)
28 (EN)
Publisher
ELSEVIER SCIENCE SA LAUSANNE (EN)
*
Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)
×
×
Βοηθείστε μας να κάνουμε καλύτερο το
OpenArchives
.gr
.
Πάρτε μέρος στη σύντομη έρευνα!