期刊
CHINESE PHYSICS LETTERS
卷 27, 期 12, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/27/12/127302
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Indium tin oxide (ITO) films were deposited on glass substrates at room temperature by dc pulse magnetron sputtering. Varying O-2 flux, ITO films with different properties are obtained. Both x-ray diffractometer and x-ray photoelectron spectrometer are used to study the change of crystalline structures and bonding structures of ITO films, respectively. Electrical properties are measured by four-point probe measurements. The results indicate that the chemical structures and compositions of ITO films strongly depend on the O-2 flux. With increasing O-2 flux, ITO films display better crystallization, which could decrease the resistivity of films. On the contrary, ITO films contain less O vacancies with increasing O-2 flux, which could worsen the conductive properties of films. Without any heat treatment onto the samples, the resistivity of the ITO film could reach 6.0 x 10(-4) Omega.cm, with the optimal deposition parameter of 0.2 sccm O-2 flux.
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