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- W3089442344 abstract "The power conversion efficiency of tandem dye-sensitized photoelectrosynthesis cells is limited by the number of p-type metal oxide semiconductors and chromophores available for the photocathode. Here, we introduce a new class of donor–acceptor–donor organic chromophores with deep highest occupied molecular orbital (HOMO) levels to target hole injection into PbTiO3, a wide-band-gap metal oxide alternative to NiO. Electrochemical measurements show that we can tune the range of the chromophores’ electron affinity between ∼4.30 and 3.30 eV and keep the ionization potential at ∼−6.50 eV. The absorption profiles for these chromophores span throughout the visible region. The new chromophore reported here, benzobis(thiadiazole)bis(thiophene-3-carboxylic acid), T2-BBT, adsorbed onto PbTiO3, obtained a maximum absorbed photon-to-current conversion efficiency of 54%. These results highlight the importance of designing chromophores with favorable redox potentials to study promising p-type wide-band-gap metal oxides for photocathodic applications." @default.
- W3089442344 created "2020-10-08" @default.
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- W3089442344 date "2020-10-01" @default.
- W3089442344 modified "2023-10-16" @default.
- W3089442344 title "Organic Chromophores Designed for Hole Injection into Wide-Band-Gap Metal Oxides for Solar Fuel Applications" @default.
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- W3089442344 doi "https://doi.org/10.1021/acs.chemmater.0c01477" @default.
- W3089442344 hasPublicationYear "2020" @default.
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