Current Photovoltaic Research ISSN:2288-3274(Print) 2508-125X(Online)

Polythiophene-TiO₂ composite was synthesized with different molar ratios of thiophene and titaniumisopropoxide (Ti(OPr)₄) for flexible solar cell application as a flexible electrode or an active material. The Ti(Opr)4 was stabilized by thiophene. The thiophene was polymerized by ferric chloride catalyst. The synthesized polythiophene exhibited strong UV-visible absorption in the range of the wavelength shorter than 500 nm. Field emission scanning electron microscope (FESEM) image of low concentration of TiO₂ film showed smooth surface. However, FESEM image of high concentration of TiO₂ film exhibited relatively rough surface. Polythiophene concentration dependent strong photoluminescence quenching of surfrhodamine-B was observed.