Abstract
TiO2 nanostructures with different morphologies were successfully synthesized via a solvothermal reaction of titanium isopropoxide and acetic acid. The synthesized TiO2 nanostructures were characterizated in detail by powder X-ray diffractometry, scanning electron microscopy, Fourier transform infrared spectroscopy and Raman etc. technologies. The effect of growth time on the composition, morphology and crystal phase of synthesized TiO2 nanostructures were studied, and corresponding photovoltaic performance of dye-sensitized solar cell (DSSC) fabricated from TiO2 nanorice was also investigated. The DSSC based on the 24 h anatase TiO2 nanorice photoelectrode shows an overall light-to-electricity conversion efficiency of 7.45% accompanying a short-circuit current density of 18.83 mA cm−2, an open-circuit voltage of 788 mV and fill factor of 0.5, which is much higher than that of 12 h (5.25%), 16 h (5.73%) and 20 h (6.20%) samples. The significant enhancement of short-circuit current density and power conversion efficiency for the 24 h nanorice-based DSSC is mainly attributed to its larger dye loading amount.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 50872084 and 51072124) and Program for New Century Excellent Talents in University (No. NCET100605). We wish to thank the Analytical and Testing Center of Sichuan University (SCU) for the assistance in sample characterization.
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Zan, R., **ao, J. & Wen, X. Synthesis of TiO2 nanorice and their improved dye sensitized solar cells performance. J Mater Sci: Mater Electron 28, 4107–4113 (2017). https://doi.org/10.1007/s10854-016-6030-z
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DOI: https://doi.org/10.1007/s10854-016-6030-z