D-sorbitol-induced phase control of TiO2 nanoparticles and its application for dye-sensitized solar cells

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

Research output: Contribution to journalArticle

26 Citations (Scopus)

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 (η) 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, 13C 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 η (6%, 1.5-fold improvement) compared with the device fabricated using the rutile TiO2 synthesized without D-sorbitol.

Original languageEnglish
Article number20103
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Feb 9

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Phase control
Sorbitol
Nanoparticles
Sugar Alcohols
Nanocrystallites
Crystals
Hydrothermal synthesis
Dynamic light scattering
High resolution transmission electron microscopy
Photocurrents
Field emission
Nuclear magnetic resonance spectroscopy
Conversion efficiency
Raman spectroscopy
Dye-sensitized solar cells
titanium dioxide
Hydrolysis
Crystal structure
Particle size
Spectroscopy

ASJC Scopus subject areas

  • General

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D-sorbitol-induced phase control of TiO2 nanoparticles and its application for dye-sensitized solar cells. / Shaikh, Shoyebmohamad F.; Mane, Rajaram S.; Min, Byoung Koun; Hwang, Yun Jeong; Joo, Oh Shim.

In: Scientific Reports, Vol. 6, 20103, 09.02.2016.

Research output: Contribution to journalArticle

Shaikh, Shoyebmohamad F. ; Mane, Rajaram S. ; Min, Byoung Koun ; Hwang, Yun Jeong ; Joo, Oh Shim. / D-sorbitol-induced phase control of TiO2 nanoparticles and its application for dye-sensitized solar cells. In: Scientific Reports. 2016 ; Vol. 6.
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