Effect of oxygen intercalation on properties of sputtered CuYO2 for potential use as p-type transparent conducting films

M.K. Jayaraj, R. Manoj, M. Nisha, K.A. Vanaja

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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-1on intercalation of oxygen at high pressure, which reduced the transparency in the visible region. The Ca-doped CuYO2films 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 CuYO2was found to be 3·15 eV. © Indian Academy of Sciences.
Original languageEnglish
Pages (from-to)49 - 53
Number of pages5
JournalBulletin of Materials Science
Volume31
Issue number1
DOIs
Publication statusPublished - Feb 2008
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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