Exploration of photoanode characteristics of a mixed ferroelectric ZnSnO3 and semiconducting Zn2SnO4 phase for photovoltaic applications
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The spontaneous and reversible polarization characteristics of ferroelectric materials gain considerable interest in photovoltaic applications. Intrinsic polarization of ferroelectric materials induces the built-in potential which potentially facilitates the separation of photoexcited electron–hole pairs in the devices. In an effort to understand the photo-physical characteristics, ball milling assisted sintering method was employed to prepare the compound. Mixed phase of ZnSnO3 and Zn2SnO4 shows an absorbance maximum in the range between 235 and 400 nm in UV–Vis spectrum. Synthesized mixed phases of ZnSnO3 and Zn2SnO4 is used as a photoanode in the Dye-sensitized solar cell and the effect of mixed phases in the photovoltaic property is analyzed. By using Ruthenium dye and LiI electrolyte, the photo conversion efficiency is examined. The observed open circuit voltage is 0.64 V and the short circuit current density is 4.2 mAcm−2. The observed Fill factor and conversion efficiency are 0.56 and 1.5%, respectively.
M.M. thank UGC, India for funding through Dr. D. S. Kothari Post-doctoral fellow, and acknowledge the Centre for Nanoscience & Technology, Crystal Growth Centre, Anna University, Chennai and Dept. Of Nuclear Physics, University of Madras, Chennai for facilities and Measurements.
- 27.M. Asemi, M. Ghanaatshoar, J. Am. Ceram. Soc. 42, 1–9 (2017)Google Scholar