Mg and N co-doped CuCrO2: A record breaking p-type TCO

We prepare CuCrO2 thin films with magnesium and nitrogen dopants. The solid state reaction method is employed to produce CuCrO2 targets with three different concentrations of Mg (0%, 2.5%, and 5%). The targets are used in an RF sputtering system to prepare thin films in the presence of N2 as the rea...

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Veröffentlicht in:Applied physics letters 2018-12, Vol.113 (24)
Hauptverfasser: Ahmadi, M., Asemi, M., Ghanaatshoar, M.
Format: Artikel
Sprache:eng
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Zusammenfassung:We prepare CuCrO2 thin films with magnesium and nitrogen dopants. The solid state reaction method is employed to produce CuCrO2 targets with three different concentrations of Mg (0%, 2.5%, and 5%). The targets are used in an RF sputtering system to prepare thin films in the presence of N2 as the reactive gas. In this manner, Mg and N atoms, respectively, replace Cr and O sites in the CuCrO2 structure and enhance the electrical and optical properties of the host material. This cationic-anionic substitution yields a superior hole transport and results in an increased conductivity of ∼278 S cm−1 which is considered as a record for p-type conductivity in transparent conducting oxides. Moreover, the co-doped CuCrO2 demonstrates a bandgap of 3.52 eV and a transmittance of about 69% in the visible region.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5051730