Solid-state oligomer electrolyte with amine-acid interaction for dye-sensitized solar cells

Jong Hyuk Park, Kyu Jin Choi, Sang Wook Kang, Yong Soo Kang, Junkyung Kim, Sang Soo Lee

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A pair of poly(ethylene glycol) oligomers with terminal groups capable of providing amine-acid interactions are used in dye-sensitized solar cells (DSSCs) as an electrolyte that can be easily solidified at room temperature. In spite of its solidity, the oligomer electrolyte has high ionic diffusion and good permeability into the nanopores of a TiO2 electrode. The electron diffusion coefficient and lifetime in a photoelectrode are largely affected by the adsorptive interaction between cations and the TiO2 surface. The energy-conversion efficiency of DSSCs using the oligomer electrolyte is greater than 4.5%. Long-term storage at room temperature demonstrates that the stability of the oligomer electrolyte system is superior to that of a volatile solvent electrolyte.

Original languageEnglish
Pages (from-to)812-816
Number of pages5
JournalJournal of Power Sources
Volume183
Issue number2
DOIs
Publication statusPublished - 2008 Sep 1

Keywords

  • Amine-acid interaction
  • Dye-sensitized solar cell
  • Energy-conversion efficiency
  • Long-term storage
  • Poly(ethylene glycol)
  • Solid-state 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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