Facile non-hydrolytic solvothermal synthesis of one dimensional TiO 2 nanorods for efficient dye-sensitized solar cells

Sasipriya Kathirvel, Chaochin Su*, Hsuan Ching Lin, Bo Ren Chen, Wen Ren Li

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

15 Scopus citations

Abstract

One dimensional rod shaped TiO2 nanostructures were successfully synthesized by a simple non-aqueous, alcoholysis based solvothermal process. Anatase TiO2 nanorods (TiO2 NRs) exhibited a surface area of 109.79 m2/g with particle length and diameter of ∼30-50 nm and ∼10-15 nm (from SEM data), respectively. The photovoltaic performance of TiO2 nanorods based electrode was investigated in the dye-sensitized solar cell (DSSC). The device based on TiO2 NRs electrode exhibited an excellent short-circuit current density (Jsc) of 17.75 mA cm -2 and an open-circuit voltage (Voc) of 0.75 V under 1 Sun AM 1.5 G solar light. Due to high dye loading, good light harvesting and fast electron transport, the optimal conversion efficiency (9.21%) of the DSSC fabricated from TiO2 NRs was significantly higher than that of the commercial DP-25 TiO2 nanoparticles based cell (6.43%).

Original languageEnglish
Pages (from-to)149-152
Number of pages4
JournalMaterials Letters
Volume129
DOIs
StatePublished - 15 08 2014
Externally publishedYes

Keywords

  • Nanoparticles
  • Photoanode
  • Solar energy materials
  • Solvothermal

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