Nanostructured photoelectrode consisting of TiO2 hollow spheres for non-volatile electrolyte-based dye-sensitized solar cells

Jong Hyuk Park, Sun Young Jung, Raehyun Kim, Nam Gyu Park, Junkyung Kim, Sang Soo Lee

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

A photoelectrode consisting of titania hollow spheres for dye-sensitized solar cells (DSSCs) is prepared by a paste method and the effect of the nanostructure on the performance of DSSCs with non-volatile electrolytes is investigated. The structure of the hollow sphere (HS) electrode with a large pore size and a high porosity allows highly viscous non-volatile electrolytes to penetrate the electrode thoroughly. Furthermore, its outstanding light-harvesting efficiency and long electron diffusion length make the efficiency of the DSSCs with the HS electrode comparable with those of a conventional nanocrystalline electrode, in spite of the smaller amount of the adsorbed dye, when oligomer electrolytes are used. The results show that the structure of a photoelectrode highly improves the performance of the device and the HS electrode is an effective structure for the use of non-volatile electrolytes in DSSCs.

Original languageEnglish
Pages (from-to)574-579
Number of pages6
JournalJournal of Power Sources
Volume194
Issue number1
DOIs
Publication statusPublished - 2009 Oct 20

Keywords

  • Dye-sensitized solar cell
  • Electron diffusion
  • Hollow sphere
  • Light-harvesting
  • Non-volatile electrolyte

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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