Abstract
We report the fabrication of self-organized partial crystalline TiO2 nanotube arrays in 1, 2-propanediol containing fluoride ion. The influence of anodization parameters including NH4F concentration, water content, anodization voltage and time on the morphology, diameter and length of TiO2 nanotube were investigated in detail. The prepared TiO2 nanotube has diameter in 30–120nm and length in 0.6–3μm. TiO2 nanotube arrays are used as photoanode for the application in dye-sensitized solar cell and the photovoltaic performance of 1.91% is achieved with a TiO2 nanotube sample of 2.2μm in length combining with N719 dye, and the corresponding photovoltaic parameters of 3.6mAcm−2 in short circuit photocurrent density, 840mV in open circuit potential, and 63.2% in fill factor.
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