Nanocrystalline TiO2 films treated with acid and base catalysts for dye-sensitized solar cells |
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| Authors: | Dong-Won Park Yong-Kook Choi Kyung-Jun Hwang Jae-Wook Lee Jai Koo Park Hee Dong Jang Hyung-Sang Park Seung-Joon Yoo |
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| Affiliation: | 1. Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea;2. Department of Chemistry, Chonnam National University, Gwangju 500-757, Republic of Korea;3. Department of Chemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea;4. Department of Resources-Environmental Engineering, Hanyang University, Seongdong-gu 133-791, Republic of Korea;5. Korea Institute of Geoscience and Mineral Resources, 30 Kajung, Yusung 305-350, Republic of Korea;6. Sogang University, Department of Chemical and Biomolecular Engineering, Sinsu, Seoul 121-741, Republic of Korea;7. Seonam University, Faculty of Environmental and Chemical Engineering, Kwangchi, Namwon 590-711, Republic of Korea |
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| Abstract: | Crystalline size and porosity of TiO2 films are known to be easily controlled by changing acid or base catalyst concentration. This work investigates the influence of acid/base catalyst treatments of TiO2 nanoparticles on the efficiency of dye-sensitized solar cells (DSSCs). The results indicate that the performance of DSSC fabricated with base-treated TiO2 is remarkably better than that fabricated with acid-treated TiO2 because of different film properties including particle size, shape, film porosity, and surface structure and electron transport phenomena. |
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