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Influences of Organic Ligands on the Microstructure and Properties of Sol–Gel Antimony-Doped Tin Oxide Thin Films

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Abstract:

The antimony-doped tin oxide (ATO) thin films were prepared by sol–gel dip-coating process from SnCl2·2H2O and SbCl3 in alcoholic solutions. The influences of organic ligands, including acetic acids (HAc), acetic acids with monoethanolamine (in brief HAc+MEA), and acetic acids with acetylacetone (in brief HAc+AcAc), on the the microstructure and electrical properties of the thin films have been investigated. The thermal behavior of the ATO gels powders and the microstructures of the thin films have been characterized by using thermogravimetric (TG), differential scanning calorimetric (DSC), Fourier transform infra-red spectral (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) analysis. The electrical resistivity of the thin films was detected by fourprobe instrument measurement. The thin films with HAc+MEA as coordination ligands had a good crystal quality and showed a preferred orientation along (101) plane when heated at 450 °C. As a consequence, it exhibited the best electrical performance. An electrical resistivity of about 6.3×10−3 Ω·cm could be achieved for the films with 500 nm thickness.

Keywords: ATO; ELECTRICAL PROPERTY; ORGANIC LIGANDS; SOL-GEL; STRUCTURE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2792

Publication date: November 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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