Substrate temperature effect on the optical properties of radio-frequency sputtered CuInSe2 thin films
- 1 May 1989
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science & Technology A
- Vol. 7 (3) , 1424-1427
- https://doi.org/10.1116/1.576296
Abstract
The influence of growth temperature on the optical properties of CuInSe2 thin films producing sputtering targets of different compositions is presented. CuInSe2 films exhibited direct allowed transitions with values ranging between 0.9 and 1 eV depending on substrate temperature. Additional direct forbidden transitions, ranging between 1 and 1.22 eV, are also observed. A clear correlation is observed between crystallinity and optical gap. On the other hand, film composition, in the range analyzed, did not show influence over optical properties.Keywords
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