A high temperature stable electrolyte system for dye-sensitized solar cells

Hak Soo Lee, Sang Hoon Bae, Yimhyun Jo, Kang Jin Kim, Yongseok Jun, Chi Hwan Han

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


The effect of the addition of single and binary additives to a mixed solvent, ethylene carbonate + γ-butyrolactone, on the performance of dye-sensitized TiO2 solar cells (DSSCs) has been investigated. The addition of a single additive, 2-(dimethylamino)-pyridine, to the electrolyte containing an ionic salt, 1,2-dimethyl-3-propylimidazolium iodide, in the mixed solvent results in an enhancement of the cell performance. The performance of the cell has been further enhanced by the addition of the second additive, 5-chloro-1-ethyl-2-methylimidazole. The resulting DSSC has performed better than the one based on the conventional electrolyte in acetonitrile. The dependence of the stability of the cells on the temperature has been evaluated over the range of 30-120 °C for outdoor applications.

Original languageEnglish
Pages (from-to)7159-7165
Number of pages7
JournalElectrochimica Acta
Issue number24
Publication statusPublished - 2010 Oct 1
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) funded by the Korean Government (MEST) (the Converging Research Center Program 2009-0093709 and NRF-2009-C1AAA001-2009-0092950).


  • Binary additive
  • Dye-sensitized solar cell
  • Ethylene carbonate
  • High temperature stability
  • γ-Butyrolactone

ASJC Scopus subject areas

  • General Chemical Engineering
  • Electrochemistry


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