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2 May 2000 Synthesis of transparent conductive polycerams
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Proceedings Volume 3943, Sol-Gel Optics V; (2000)
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States
Organic polythiophene polymers are known to be good electrical conductors, however they are lacking of chemical and mechanical stability. In this paper we describe a synthesis of polyethylene dioxythiophene-polystyrene sulfonate (PEDT-PSS) doped sol-gel polyceram material to improve chemical and mechanical properties of PEDT-PSS thin films. Thin films are fabricated by spin and spray coating methods from polymer-sol-gel solutions on sodalime glass, polyurethane, polycarbonate (PC) and polymethyl methacrylate (PMMA) substrates. The effects of different kinds of silicon dioxide network forming sol-gel precursors are investigated in terms of the electrical conductivity and the stability of the electrical conducting properties against various atmospheres and chemicals. Optical transmittances at the visible wavelength region and refractive indices are also determined. Results indicate that a type and an amount of the sol-gel silane precursor have an effect on the electrical, optical and chemical properties of these films. The most conductive and stable coatings are formed when glycidyloxypropyltrimethoxysilane is used as a sol-gel precursor. The maximum conductivity obtained for 150 nm thick film is 17 S/cm. Finally some of the applications, such as antistatic protection coatings on plastics and optical thin film devices of these polycerams are described.
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Terho K. Kololuoma, Seppo M. Nissilae, and Juha T. Rantala "Synthesis of transparent conductive polycerams", Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000);

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