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- W1981995359 abstract "Transparent nanostructured SrTiO3 film electrodes were fabricated on conductive substrates from SrTiO3 nanocrystals. Band energetics were determined with spectroelectrochemical measurements, and its trap states were investigated with electrochemistry. The flat band edges (Efb) of nanostructured SrTiO3 electrodes were highly dependent on the pH of the electrolyte, and measured to be −0.71, −0.96, and −1.19 V versus saturated Ag/gCl at pH 3.0, 6.8, and 13.0, respectively. The time-resolved current at different applied potentials positive of the flat band edge clearly indicate a trap-filling process. The results showed that trap state densities are also highly pH dependent. Total trap state densities of 2.0 × 1015, 8.08 × 1015, and 1.21 × 1016 cm−2 were determined at pH 3.0, 6.8, and 13.0, respectively with maximum located at −0.25, −0.50, and −0.70 V. The results obtained from cyclic voltammograms are in good agreement with that obtained from the measurements of time-resolved currents. The size of the peak potentials related to the trap states (−0.25, −0.51, and −0.72 V for pH 3.0, 6.8, and 13.0, respectively) in the cyclic voltammograms increases dramatically with increase of pH, indicating that traps are mostly surface-related." @default.
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- W1981995359 date "2009-12-22" @default.
- W1981995359 modified "2023-09-25" @default.
- W1981995359 title "Preparation and Band Energetics of Transparent Nanostructured SrTiO<sub>3</sub> Film Electrodes" @default.
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- W1981995359 doi "https://doi.org/10.1021/jp910204q" @default.
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