Resistivity and oxygen content of indium tin oxide films deposited at room temperature by pulsed-laser ablation

被引:47
作者
Wu, Y [1 ]
Marée, CHM
Haglund, RF
Hamilton, JD
Paliza, MAM
Huang, MB
Feldman, LC
Weller, RA
机构
[1] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[2] Vanderbilt Univ, Dept Elect & Comp Engn, Nashville, TN 37235 USA
关键词
D O I
10.1063/1.370864
中图分类号
O59 [应用物理学];
学科分类号
摘要
Transparent, conductive indium tin oxide (ITO) films were fabricated by pulsed-laser deposition on substrates held at room temperature. We investigated the relationship between electrical/optical properties of the films and the material stoichiometry, measured by Rutherford backscattering. The lowest resistivity films (similar to 4x10(-4) Omega cm) have excessive oxygen compared with the stoichiometric composition ITO. After annealing in argon at 400 degrees C for 1.5 h, the oxygen-to-(indium+tin) ratio approaches the stoichiometric composition of 1.5 and resistivities of annealed samples are similar to 2.5x10(-4) Omega cm. The room-temperature ITO resistivity dependence on chamber gas pressure is explained in terms of a gas-dynamic model and oxygen content of the film. (C) 1999 American Institute of Physics. [S0021-8979(99)00114-0].
引用
收藏
页码:991 / 994
页数:4
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