Substrate Temperature Effects on Some Optical Constants of Cobalt Oxide Thin Films

Muthanna Journal of Pure Sciences – MJPS

Vol.3 – No. 2 / October 2016

Hassan Hadi Daroysh
Department of Physics, College of Education, Al-Mustansiriyah University, Baghdad, IRAQ


Cobalt oxide thin films has been deposited onto different glass substrate temperature ranging (350-500) oC by spraying an aqueous solution of cobalt chloride using chemical spray pyrolysis. Absorbance spectra were recorded in order to calculate the optical constants. In general all these parameters were affected by increasing the substrate temperature . The optical energy gap was calculated by Tauc relation indicate that its value were decrease upon increasing substrate temperature from1.91 eV for 350 oC substrate temperature to 1.82 eV for 500 oC substrate temperature.


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