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Published Online: September 2015

Enhanced optophysical properties of poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)] via addition of TiO2 nanoparticles

AIP Conference Proceedings 1678, 040009 (2015); https://doi.org/10.1063/1.4931266
Siti Aishah Ahmad Fuzia), Mohammad Hafizuddin Hj Jumalib), and Bandar Ali Abdulqader Al-Asbahic)
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    Abstract
    This work investigated the effect on 5 wt% addition of TiO2 nanoparticles (NPs) on the optical absorption characteristics of Poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)] (F8BT). Both materials were mixed using solution blending method and then spin coated onto ITO-coated glass substrate at 1000 rpm for 30s. The optical properties of the nanocomposite were determined using UV-Vis spectroscopy. Compares to pristine film, the absorption peak of the nanocomposite film improved and shifted to longer wavelength indicating reduction in the direct and indirect band gaps. Better optophysical properties of F8BT/TiO2 nanocomposites is believed due to compatible band structures and efficient charge trapping effect displayed by the NPs.

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