High performance dye-sensitized solar cells with alkylpyridinium iodide salts in electrolytes

Semina Jeon, Yimhyun Jo, Kang Jin Kim, Yongseok Jun, Chi Hwan Han

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Pyridinium iodide salts, which are competitive to the conventional imidazolium iodide salts, have been used for dye-sensitized solar cells as iodide sources and ionic conductivities. Pyridinium iodide series are easy to prepare and less expensive than the imidazolium series salts. In this research, quite comparable efficiencies were obtained from electrolytes with pyridinium iodide salts. For the experiments, pyridinium salts with a few different alkyl chains are applied. When a pyridinium head is modified to picolinium, which has a methyl group on the pyridinium head, a noticeable Voc drop has been observed. However, the length of the alkyl chains on the pyridinium head does not affect Voc effectively. The oddnumbered alkyl chains showed slightly lower Voc compared to that of the even-numbered alkyl chains. Finally, the performances of the cells with pyridinium salts are compared to those of the conventional cells with imidazolium salts.

Original languageEnglish
Pages (from-to)512-516
Number of pages5
JournalACS Applied Materials and Interfaces
Volume3
Issue number2
DOIs
Publication statusPublished - 2011 Feb 23
Externally publishedYes

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Keywords

  • Dye-sensitized solar cell
  • Electrolyte
  • Pyridinium salts

ASJC Scopus subject areas

  • Materials Science(all)

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