Ionic diffusion in various electrolytes and the implications for dye-sensitized solar cells

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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The diffusion of I3- in volatile and non-volatile electrolytes is investigated to confirm the effects on the performance of dye-sensitized solar cells (DSSCs). The ionic diffusion is controlled by using electrolyte mediums with diverse viscosities including acetonitrile, 3-methoxy-propionitrile, diethylene glycol dimethyl ether, and poly(ethylene glycol dimethyl ether) with three different molecular weights and varying I3- concentrations. The diffusion flux in each electrolyte is characterized by scanning electrochemical microscopy. By measuring incident photon to current conversion efficiency, electrochemical impedance spectroscopy, and photovoltaic performance, the optimum diffusion flux of I3- is suggested for the best efficiency of DSSCs.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume213
Issue number1
DOIs
Publication statusPublished - 2010 Jun 10

Bibliographical note

Funding Information:
This work was supported by a KIST internal project under contract 2E20980. We would like to thank Dr. Nam-Gyu Park at the Solar Cell Research Center at KIST for use of the IPCE and impedance measurements.

Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.

Keywords

  • Diffusion flux
  • Dye-sensitized solar cell
  • Electrolyte medium
  • Oligomer electrolyte

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Physics and Astronomy

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