Effect of oxygen intercalation on properties of sputtered CuYO2 for potential use as p-type transparent conducting films
Source abstract
Abstract
Transparent films of copper yttrium oxide doped with 2% calcium have been prepared by rf magnetron sputtering. The films show a conductivity of 8 Scm−1 on intercalation of oxygen at high pressure, which reduced the transparency in the visible region. The Ca-doped CuYO2 films before oxygen intercalation show an average transmission of about 60% which reduces to about 45% upon oxygen intercalation. The temperature dependence of the conductivity indicates semiconductor behaviour with low activation energy of 0·59 eV at room temperature. The positive sign of Seebeck coefficient (+274 μVK−1) confirms the p-type conductivity of the films. The optical bandgap of CuYO2 was found to be 3·15 eV.
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Research context
OpenAlex topics: Copper-based nanomaterials and applications · ZnO doping and properties · Electronic and Structural Properties of Oxides
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