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- W1964139109 abstract "V ertical ZnO nanotube (ZNT) arrays were synthesized onto an indium doped tin oxide (ITO) glass substrate by a simple electrochemical deposition technique followed by a selective etching process. Scanning electron microscopy (SEM) showed formation of well-faceted hexagonal ZNT arrays spreading uniformly over a large area. X-ray difiraction (XRD) of ZNT layer showed substantially higher intensity for the (0002) difiraction peak, indicating that the ZnO crystallites were well aligned with their c-axis. Profllometer measurements of the ZNT layer showed an average thickness of »7 „m. Diameter size distribution (DSD) analysis showed that ZNTs exhibited a narrow diameter size distribution in the range of 65{120 nm and centered at »75 nm. The photoluminescence (PL) spectrum measurement showed violet and blue luminescence peaks that were centered at 410 and 480 nm, respectively, indicating the presence of internal defects. Ultra-violet (UV) spectroscopy showed major absorbance peak at »348 nm, exhibiting an increase in energy gap value of 3.4 eV. By employing the formed ZNTs as the photo-anode for a dye-sensitized solar cell (DSSC), a full-sun conversion e‐ciency of 1.01% was achieved with a flll factor of 54%. Quantum e‐ciency studies showed the maximum of incident photon-to-electron conversion e‐ciency in a visible region located at 520{550 nm range." @default.
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- W1964139109 date "2011-11-01" @default.
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- W1964139109 title "Photoanode Activity of ZnO Nanotube Based Dye-Sensitized Solar Cells" @default.
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- W1964139109 doi "https://doi.org/10.1016/s1005-0302(11)60170-9" @default.
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