In-situ construction of three-dimensional titania network on Ti foil toward enhanced performance of flexible dye-sensitized solar cells

Yichuan Rui, Yuanqiang Wang, Qinghong Zhang, Qijin Chi, Minwei Zhang, Hongzhi Wang, Yaogang Li, Chengyi Hou

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Three-dimensional titania network was in-situ constructed on Ti foil via sequential acid and hydrogen peroxide treatments. The titania network was pure anatase phase and homogeneously covered on the titanium grain surface, which largely enhanced the roughness of the Ti foil. The as-received Ti foil and the treated one were used as the flexible substrates of DSSCs, and energy conversion efficiencies of 3.74% and 4.98% were obtained, respectively. Such remarkable increment can be ascribed to the good electrical contact between the nanocrystalline TiO2 and the Ti foil, the improved electron percolation pathways and recombination inhibition of electrons in Ti substrate with triiodide ions in electrolyte. Flexible DSSCs based on the treated Ti foil showed relatively good mechanical stability, which exhibited 97.3% retention of the initial efficieny after twenty consecutive bending.
Original languageEnglish
JournalApplied Surface Science
Volume380
Pages (from-to)210-217
Number of pages8
ISSN0169-4332
DOIs
Publication statusPublished - 2016
Event10th International Conference on Surfaces, Coatings and Nanostructured Materials - Manchester Conference Centre, Manchester, United Kingdom
Duration: 13 Sep 201516 Sep 2015
Conference number: 10

Conference

Conference10th International Conference on Surfaces, Coatings and Nanostructured Materials
Number10
LocationManchester Conference Centre
CountryUnited Kingdom
CityManchester
Period13/09/201516/09/2015

Keywords

  • Flexible dye-sensitized solar cells
  • Three-dimensional
  • Ti foil
  • Energy conversion efficiency

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