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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Characterization of Selectively Absorbing Properties of Indium Tin Oxide Thin Films by UV-VIS-IR Spectroscopy

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1992, v.5 no.1, pp.135-142
Lee, Jeon-Kook
Lee, Dong-Heon
Cho, Nam-Hee
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Abstract

Indium tin oxide(ITO) films coated on the window glass selectively transmit the solar energy and infrared. We call this system passive solar collectors. Selectively absorbing properties of sol gel dip coated ITO films were characterized by UV-VIS-NIR spectroscopy. The effects of heat treating temperature, time, atmosphere, substrate and barrier layers are concerned. Indium tin oxide films heat-treated at <TEX>$500^{\circ}C$</TEX> in a reducing atmosphere show intrinsic properties. Efficiency of solar energy transmittance was enhanced by coating of <TEX>$SiO_2-ZrO_2$</TEX> as an alkali ion barrier layer. Energy was saved by the double layers of <TEX>$SiO_2-ZrO_2$</TEX> and ITO since solar energy is transmitted and heat generated inside(<TEX>${\lambda}$</TEX> > 2700nm) is reflected.

keywords
Indium tin oxide films, UV-VIS-NIR spectroscopy, Solar energy transmittance


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