AVS 55th International Symposium & Exhibition
    Thin Film Thursday Sessions
       Session TF-ThP

Paper TF-ThP13
The Structural, Electrical and Optical Properties of ATO Films Prepared at Room Temperature by Radio Frequency Magnetron Sputtering for Transparent Electrodes

Thursday, October 23, 2008, 6:00 pm, Room Hall D

Session: Aspects of Thin Films
Presenter: S.U. Lee, Sungkyunkwan University, Korea
Authors: S.U. Lee, Sungkyunkwan University, Korea
W.S. Choi, Hanbat National University, Korea
H.J. Kim, Sungkyunkwan University, Korea
B. Hong, Sungkyunkwan University, Korea
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Antimony-doped tin oxide (ATO) films were prepared on a 7059 Corning glass substrate by the radio frequency (RF) magnetron sputtering method using a SnO2 target mixed with Sb of 6 wt% at room temperature. The working pressure was varied from 5 to 15 mTorr in steps of 5 mTorr, and the RF power was varied from 100 to 175 W in step of 25 W at room temperature. The thickness of the deposited ATO films was about 150 nm ± 10. X-ray diffraction (XRD) measurements showed ATO films to be crystallized with a strong (101) preferred orientation as the RF power increased. The spectra revealed that the deposited films were polycrystalline and they retained the tetragonal structure. The grain size, which was 23.2 nm, was calculated from the XRD spectra using the Scherrer equation. ATO film deposited at a working pressure of 5 mTorr and RF power of 175 W showed the lowest resistivity of 8.6 x 10^-3 ohm.cm and the optical transmittance was 86.5 % in the visible range.