TITLE

Band tail hopping conduction mechanism in highly conductive amorphous carbon nitride thin films

AUTHOR(S)
Lazar, G.; Zellama, K.; Chin, M.; Godet, C.
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/20/2004, Vol. 85 Issue 25, p6176
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nitrogenated amorphous carbon (a-C:N) films have been synthesized by radio frequency (rf) magnetron sputtering at various substrate temperatures and rf discharge powers. The temperature dependence of the electrical conductivity has been measured in order to identify the dominant conduction mechanism. The conductivity was found to increase over ten orders of magnitude with increasing growth temperature and discharge power. In the ohmic regime, the conductivity of the investigated a-C:N films is likely dominated by hopping conduction, in good agreement with a model for hopping in localized bandtail states, rather than by extended states band conduction.
ACCESSION #
15374344

 

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