DSpace Repository

Effect of contacts and thickness on the NO2 sensing properties of tellurium based films

Show simple item record

dc.contributor.author TSIULYANU, Alexantru
dc.date.accessioned 2019-10-16T12:56:48Z
dc.date.available 2019-10-16T12:56:48Z
dc.date.issued 2005
dc.identifier.citation TSIULYANU, Alexantru. Effect of contacts and thickness on the NO2 sensing properties of tellurium based films. In: Microelectronics and Computer Science: proc. of the 4th intern. conf., September 15-17, 2005. Chişinău, 2005, vol. 1, pp. 141-144. ISBN 9975-66-038-X. en_US
dc.identifier.isbn 9975-66-038-X
dc.identifier.uri http://repository.utm.md/handle/5014/4754
dc.description.abstract The influence of contacting materials, and thickness of the tellurium based films on their electrical conductivity and sensitivity to NO2 is given. It is shown that until thickness is below 100 nm the conductivity increases with the increase of the layer thickness but becomes almost constant at thicknesses more than100nm. Scanning electron microscopy analyses indicates that grown films are compact, i.e. two-channel mechanism of current flow occurs. The sensitivity toward NO2, being controlled by gas concentration, decreases with film thickness increase but is nearly independent on contacts work function. The results are discussed taking into consideration the contributions of grain boundary as well as grain bulk and surface resistance to the total conductivity. Chemisorption of NO2 molecules is accompanied by hole enrichment of the surface and grain boundary region, due to interaction of these molecules with lone-pair electrons. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject gas sensors en_US
dc.subject tellurium chalcogenides en_US
dc.title Effect of contacts and thickness on the NO2 sensing properties of tellurium based films en_US
dc.type Article en_US


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States

Search DSpace


Advanced Search

Browse

My Account