The Effect of Electrolyte Purification on the Performance and Long-Term Stability of Dye-Sensitized Solar Cells

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Tiihonen A, Miettunen K, Rendon S, Mavrynsky D, Halme J, Leino R, Lund P
Publication year: 2015
Journal: Journal of The Electrochemical Society
Journal acronym: J ELECTROCHEM SOC
Volume number: 162
Issue number: 9
Start page: H661
End page: H670
Number of pages: 10
ISSN: 0013-4651


In this study the effect of the purification of electrolyte material on the performance and long-term stability of dye-sensitized solar cells is investigated. The combined effect of purifying all the electrolyte materials has been examined, as has the effect of purifying each compound to identify those compounds worth purifying and to eliminate unnecessary production steps on an industrial scale. Statistical methods were employed to draw statistically significant conclusions from the experimental results. No effect on the initial cell performance is found in this study. The purity of the electrolyte solvent (here methoxypropionitrile) is shown to have a remarkable effect on the cell lifetime: it could even double when the cell is properly purified. It is shown that exposing the cell to even relatively small amounts of UV light resulted in cell degradation through electrolyte bleaching during a 1000 hour aging test. Here the impurities in the electrolyte solvent lead to an almost doubled rate of electrolyte bleaching under UV light. (C) The Author(s) 2015. Published by ECS. All rights reserved.

Last updated on 2020-03-07 at 06:37