Effects of electron beam irradiation on the photoelectrochemical properties of TiO2 film for DSSCs |
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| Authors: | Hyun-Bin Kim Dong-Won Park Joon-Pyo Jeun Seung-Hwan Oh Young-Chang Nho Phil-Hyun Kang |
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| Affiliation: | 1. Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute, Jeollakuk-do 580-185, Korea;2. Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea;1. Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy;2. Gruppo V Sezione INFN, Catania, Italy;3. Dipartimento Energia, Ingegneria dell’Informazione e Modelli Matematici, Università di Palermo, Viale delle Scienze, Ed. 6, I-90128 Palermo, Italy;4. Dipartimento di Chimica, Università di Pavia, V.le Taramelli, 12 Pavia, Italy and INFN, Sezione di Pavia, Pavia, Italy.;1. Institute of Mathematical Sciences and Physics, College of Arts and Sciences, University of the Philippines Los Baños, Los Baños, Laguna 4031, Philippines;2. Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan;3. Center for Atomic and Molecular Technologies, Osaka University, Suita, Osaka 565-0871, Japan;4. Center for Continuing Professional Development, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan;1. Department of Chemical Engineering, University of Engineering and Technology, 25120 Peshawar, Pakistan;2. Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran;1. Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia;2. Center for Applied Energy Research, University of Kentucky, 2540 Research Park Drive, Lexington, KY, 40511, United States;3. School of Chemical Science, Universiti Sains Malaysia, Penang, Malaysia;1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China;2. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China;3. School of Science, Tibet University, Lhasa 850000, Tibet, PR China;4. Tianjin University-National Institute for Materials Science (TU-NIMS) Joint Research Center, Tianjin University, Tianjin 300072, PR China |
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| Abstract: | TiO2 has been widely utilized for various industrial applications such as photochemical cells, photocatalysts, and electrochromic devices. The crystallinity and morphology of TiO2 films play a significant role in determining the overall efficiency of dye-sensitized solar cells (DSSCs). In this study, the preparation of nanostructured TiO2 films by electron beam irradiation and their characterization were investigated for the application of DSSCs. TiO2 films were exposed to 20–100 kGy of electron beam irradiation using 1.14 MeV energy acceleration with a 7.46 mA beam current and 10 kGy/pass dose rates. These samples were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy (XPS) analysis. After irradiation, each TiO2 film was tested as a DSSC. At low doses of electron beam irradiation (20 kGy), the energy conversion efficiency of the film was approximately 4.0% under illumination of simulated sunlight with AM 1.5 G (100 mW/cm2). We found that electron beam irradiation resulted in surface modification of the TiO2 films, which could explain the observed increase in the conversion efficiency in irradiated versus non-irradiated films. |
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