Hybrid TiO2: polymer photovoltaic cells made from a titanium oxide precursor

L.H. Slooff, M.M. Wienk, J.M. Kroon

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Hybrid TiO2:polymer photovoltaic cells were made from mixtures of titanium(IV) isopropoxide and poly[2-methoxy-5-(3',7'-dimethyloctyl)-p-phenylene vinylene] (MDMO-PPV) or poly(3-octyl thiophene) (P3OT) via hydrolysis in air. Cells were made with varying titanium(IV) isopropoxide:polymer ratios. Current–voltage measurements (at 0.7–0.8 sun equivalent) of a TiO2:P3OT (10 vol.% TiO2) photovoltaic cell show a short-circuit current of 0.7 mA/cm2, an open-circuit voltage of 450 mV and a fill factor of 0.41, resulting in a calculated AM1.5 (100 mW/cm2) power conversion efficiency of 0.17%. Devices based on MDMO-PPV and TiO2 (20 vol.% TiO2) show an open-circuit voltage of 600 mV and a short-circuit current of 0.6 mA/cm2 (at 0.7 sun equivalent), resulting in a calculated AM1.5 power conversion efficiency of 0.22%.
Original languageEnglish
Pages (from-to)634-638
JournalThin Solid Films
Publication statusPublished - 2004


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