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 language | English |
---|---|
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Journal of Photochemistry and Photobiology A: Chemistry |
Volume | 213 |
Issue number | 1 |
DOIs | |
Publication status | Published - 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