Fabrication and Characterization of Tungsten-Modified TiO<sub>2</sub> as a Photo-Anode in a Dye-Sensitized Solar Cell

The tungsten (W)-modified TiO<sub>2</sub> films were fabricated on the fluorine-doped TiO<sub>2</sub> substrates using the sol–gel process. The influences of W dopant on the photovoltaic properties of the tungsten-modified TiO<sub>2</sub> DSSC were analyzed, too....

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Main Authors: Ming-Cheng Kao, Jun-Hong Weng, Chih-Hung Chiang, Kai-Huang Chen, Der-Yuh Lin, Tsung-Kuei Kang
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Engineering Proceedings
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Online Access:https://www.mdpi.com/2673-4591/92/1/76
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Summary:The tungsten (W)-modified TiO<sub>2</sub> films were fabricated on the fluorine-doped TiO<sub>2</sub> substrates using the sol–gel process. The influences of W dopant on the photovoltaic properties of the tungsten-modified TiO<sub>2</sub> DSSC were analyzed, too. The crystallization and dye absorption of tungsten-modified TiO<sub>2</sub> thin films increased more than those of the undoped TiO<sub>2</sub> thin films. Furthermore, the optimal performances of the <i>V<sub>oc</sub></i>, <i>J<sub>sc</sub></i>, fill factor, and efficiency of the DSSC with tungsten-modified TiO<sub>2</sub> thin films were 0.68 V, 16.28 mA/cm<sup>2</sup>, 65.5%, and 7.03%, respectively. The enhancement was mainly due to the improved crystallinity and increased dye adsorption of the tungsten-modified TiO<sub>2</sub> thin films, which contributed to improving the efficiency of the dye-sensitized solar cell.
ISSN:2673-4591