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• W1845982523 abstract "A di-vanadium-substituted Lindqvist-type polyoxometalate [Cu(C12H8N2)2]2[V2W4O19]·4H2O (1) was hydrothermally synthesized and characterized structurally by single crystal X-ray diffraction analysis. X-ray photoelectron spectroscopy and energy disperse spectroscopy tests further prove the existence of vanadium. Ultraviolet photoelectron spectroscopy and density functional theoretical studies indicate that the energy level of 1 matches well with the conduction band of the TiO2. Furthermore, considering the semiconductor-like nature of 1 and the introduction of transition metal element Cu synchronously extends the absorption to the visible region, which should also be beneficial to the photovoltaic device performance. 1-Doped TiO2 composites (denoted as 1@TiO2) have been successfully fabricated by a simple sol-gel method, and introduced into the dye-sensitized solar cells (DSSCs) as co-sensitizers in N719-sensitized photoanodes by mixing 1@TiO2 with P25 nanoparticles with different weight ratios to enhance the photoelectric conversion efficiency. The investigations show that the DSSC assembled with 1@TiO2/19P25 photoanode has the best performance and the overall improvement of the efficiency is 21.6% compared with pure P25. Furthermore, the electrochemical impedance spectroscopy and open-circuit voltage decay investigations show that the cosensitization of 1 and N719 can promote electron transfer and restrain charge recombinations in the DSSCs, resulting in a longer electron lifetime." @default.
• W1845982523 created "2016-06-24" @default.
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• W1845982523 date "2015-01-01" @default.
• W1845982523 modified "2023-10-14" @default.
• W1845982523 title "Co-sensitization promoted light harvesting with a new mixed-addenda polyoxometalate [Cu(C₁₂H₈N₂)₂]₂[V₂W₄O₁₉]·4H₂O in dye-sensitized solar cells" @default.
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• W1845982523 doi "https://doi.org/10.1039/c5dt02992a" @default.
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• W1845982523 hasPublicationYear "2015" @default.
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