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D-sorbitol-induced phase control of TiO2 nanoparticles and its application for dye-sensitized solar cells : D-sorbitol-induced phase control of TiO<sub>2</sub> nanoparticles and its application for dye-sensitized solar cells

Cited 103 time in Web of Science Cited 117 time in Scopus
Authors

Shaikh, Shoyebmohamad F.; Mane, Rajaram S.; Min, Byoung Koun; Hwang, Yun Jeong; Joo, Oh-shim

Issue Date
2016-02
Publisher
Nature Publishing Group
Citation
Scientific Reports, Vol.6, p. 20103
Abstract
Using a simple hydrothermal synthesis, the crystal structure of TiO2 nanoparticles was controlled from rutile to anatase using a sugar alcohol, D-sorbitol. Adding small amounts of D-sorbitol to an aqueous TiCl4 solution resulted in changes in the crystal phase, particle size, and surface area by affecting the hydrolysis rate of TiCl4. These changes led to improvements of the solar-to-electrical power conversion efficiency (eta) of dye-sensitized solar cells (DSSC) fabricated using these nanoparticles. A postulated reaction mechanism concerning the role of D-sorbitol in the formation of rutile and anatase was proposed. Fourier-transform infrared spectroscopy, C-13 NMR spectroscopy, and dynamic light scattering analyses were used to better understand the interaction between the Ti precursor and D-sorbitol. The crystal phase and size of the synthesized TiO2 nanocrystallites as well as photovoltaic performance of the DSSC were examined using X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and photocurrent density-applied voltage spectroscopy measurement techniques. The DSSC fabricated using the anatase TiO2 nanoparticles synthesized in the presence of D-sorbitol, exhibited an enhanced eta Pi (6%, 1.5-fold improvement) compared with the device fabricated using the rutile TiO2 synthesized without D-sorbitol.
ISSN
2045-2322
URI
https://hdl.handle.net/10371/218526
DOI
https://doi.org/10.1038/srep20103
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  • College of Natural Sciences
  • Department of Chemistry
Research Area Artificial Photosynthesis, Electrochemical CO2 Utilization, Solar to chemical conversion device, 인공 광합성, 전기화학적 CO 2 활용, 태양광을 화학으로 변환하는 장치

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