Enhancing DSSC conversion efficiency by ozone-treated TiO2 photoanode and optimum CNT/PDDA counter electrode

Yoshiki Kurokawa, Dang Trang Nguyen, Ryota Fujimoto, Kozo Taguchi


The conversion efficiency of dye-sensitized solar cells (DSSCs) depends on the performance of the photoanode and the counter electrode. In this paper, UV-ozone treatment has been applied to the photoanode to clean and increase the hydrophilicity of the photoanode. As a result, the dye adsorption capacity was improved. Also, low-cost multiwalled carbon nanotube (CNT) combined with poly (diallyl dimethylammonium chloride) (PDDA) was used to fabricate the counter electrode. The CNT/PDDA counter electrode was optimized to maximize its performance. By using the ozone-treated photoanode and optimum CNT/PDDA counter electrode, the conversion efficiency has increased by about 64%.


CNT/PDDA; DSSC; Electrophoresis deposition; Multilayer; Ozone treatment

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DOI: http://doi.org/10.11591/ijece.v10i3.pp2926-2933
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ISSN 2088-8708, e-ISSN 2722-2578