期刊
THIN SOLID FILMS
卷 411, 期 1, 页码 119-124出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0040-6090(02)00199-2
关键词
transparent conductors; thin films; p-type; delafossite; seebeck effect; oxygen intercalation; transparent diode; CuCrO2; CuScO2; CuGa1-xFexO2; AgCoO2; CuNi2/3Sb1/3O2
Several p-type oxides of the delafossite structure have been investigated in the hope that the conductivity and transparency will be high enough to render them useful in the manufacture of transparent p-n junction diodes and other transparent devices. The highest conductivity achieved to date has been 220 S/cm in CuCr1-xMgxO2 thin films. Oxygen intercalation in CuSc1-xMgxO2+y films improves the conductivity at the expense of optical transparency. We have improved the conductivity of CuGaO2-based films from 0.02 to 1 S/cm, by substitution of Fe for Ga. p-Type conductivity has been demonstrated in an Ag-based delafossite film. A sputter-deposited AgCoO2 film has a conductivity of 0.2 S/cm, a Seebeck coefficient of 230 muV/K and a band gap of 4.1 eV at room temperature. CuNi2/3Sb1/3O2 films have been produced that are p-type conductors when doped with Sn. (C) 2002 Elsevier Science B.V. All rights reserved.
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