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The effects of heat treatments on the transport properties of CuxS thin films

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3 Author(s)
Hmurcik, L. ; Clarkson College of Technology, Potsdam, New York 13676 ; Allen, L. ; Serway, R.A.

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We have studied the effects of heat treatments on three CuxS thin films (1.995≤x≤2). Our results suggest that initial heat treatments cause copper in grain boundaries to diffuse irreversibly into the CuxS crystallites. Subsequent heating in hydrogen causes a reduction in surface oxides while the reverse process occurs in an oxygen atmosphere. At a given elevated temperature, the resistivity ρ and charge density P vary with time according to the expressions P=P0e±(t/τ)1/2 and ρ=ρ0e∓(t/τ)1/2 . On the other hand, the mobility is found to be approximately constant at a given temperature during heat treatment.

Published in:

Journal of Applied Physics  (Volume:53 ,  Issue: 12 )

Date of Publication:

Dec 1982

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