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Ultralong Rutile TiO2 Nanowire Arrays for Highly Efficient Dye-Sensitized Solar Cells

  • Harbin Institute of Technology
  • CAS - Changchun Institute of Applied Chemistry
  • Harbin Normal University

Research output: Contribution to journalArticlepeer-review

Abstract

Vertically aligned rutile TiO2 nanowire arrays (NWAs) with lengths of ∼44 μm have been successfully synthesized on transparent, conductive fluorine-doped tin oxide (FTO) glass by a facile one-step solvothermal method. The length and wire-to-wire distance of NWAs can be controlled by adjusting the ethanol content in the reaction solution. By employing optimized rutile TiO2 NWAs for dye-sensitized solar cells (DSCs), a remarkable power conversion efficiency (PCE) of 8.9% is achieved. Moreover, in combination with a light-scattering layer, the performance of a rutile TiO2 NWAs based DSC can be further enhanced, reaching an impressive PCE of 9.6%, which is the highest efficiency for rutile TiO2 NWA based DSCs so far.

Original languageEnglish
Pages (from-to)13384-13391
Number of pages8
JournalACS Applied Materials and Interfaces
Volume8
Issue number21
DOIs
StatePublished - 1 Jun 2016
Externally publishedYes

Keywords

  • TiO
  • charge recombination
  • dye-sensitized solar cells
  • nanowire arrays
  • solvothermal synthesis

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