Investigation of Temperature and Aging Effects in Nanostructured Dye Solar Cells Studied by Electrochemical Impedance Spectroscopy

Minna Toivola*, Janne Halme, Lauri Peltokorpi, Peter Lund

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Effects of aging and cyclically varying temperature on the electrical parameters of dye solar cells were analyzed with electrochemical impedance spectroscopy. Photoelectrode total resistance increased as a function of time due to increasing electron transport resistance in the TiO(2) film. On the other hand, photoelectrode recombination resistance was generally larger, electron lifetimes in the TiO(2) were film longer, and charge transfer resistance on the counter electrode was smaller after the temperature treatments than before them. These effects correlated with the slower deterioration rate of the temperature-treated cells, in comparison to the reference cells. Copyright (c) 2009 Minna Toivola et al.

Original languageEnglish
Article number786429
Pages (from-to)1-15
Number of pages15
JournalInternational Journal of Photoenergy
Volume2009
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Keywords

  • POROUS FILM ELECTRODES
  • LONG-TERM STABILITY
  • ACTIVATION-ENERGIES
  • INTERNAL RESISTANCE
  • SOLID-STATE
  • TRANSPORT
  • PERFORMANCE
  • EFFICIENCY
  • MODULES
  • RECOMBINATION

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