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- W2025377923 abstract "Abstract Anatase is the preferred phase of TiO 2 in dye-sensitized solar cells (DSSCs) because of its lower charge recombination than other phases. However, for small diameter nanotubes before detached from the Ti foil, rutile rather than anatase appears upon a pre-treatment annealing at 400 °C or above. Here we have fabricated highly ordered free-standing small diameter (50 nm) TiO 2 nanotube membranes which were pre-treated at 300 °C to maintain pure anatase phase. The free-standing nanotube membranes were used to fabricate the photoanodes and were further calcined at 500 °C to achieve full crystallization of the nanotubes. It was shown that the electron lifetime is much longer in the 300 °C-pre-treated nanotubes than those pre-treated at 400 or 500 °C, leading to a significantly improved power conversion efficiency of 4.59% (enhanced by ∼50%)." @default.
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- W2025377923 date "2014-09-01" @default.
- W2025377923 modified "2023-09-27" @default.
- W2025377923 title "Improved anatase phase stability in small diameter TiO2 nanotube arrays for high performance dye-sensitized solar cells" @default.
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- W2025377923 doi "https://doi.org/10.1016/j.jallcom.2014.04.083" @default.
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