Quasi-solid electrolyte with polyamidoamine dendron modified-talc applied to dye-sensitized solar cells

Marcos A S Andrade, Ana F. Nogueira, Kati Miettunen, Armi Tiihonen, Peter D. Lund, Heloise O. Pastore*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

A sequence of generations of polyamidoamine dendron modified-talc, PAMAM-talc-Gn (n = 1, 3, 5 and 7), is proposed as additive in a composite gel electrolyte for dye-sensitized solar cells. Polyiodides are intercalated into the organotalc interlamellar space by adsorption of iodine vapor, producing triiodide and polyiodides. We investigate the effect of organotalc content on the charge transport in the electrolyte and solar cell performance and optimize the organotalc content. Without the previous adsorption of iodine molecules, the organotalcs appear to remove iodine from the electrolyte solution decreasing device's performance significantly. Instead, the samples with additional iodide had higher Jsc and efficiency approaching the values of the reference cells containing liquid, which suggests that this kind of gelling method would be suitable for dye solar cells. Charge transport in the gel electrolyte is investigated with electrochemical impedance spectroscopy and cyclic voltammetry analyses using symmetrical CE-CE electrochemical cells.

Original languageEnglish
Pages (from-to)161-170
Number of pages10
JournalJournal of Power Sources
Volume325
DOIs
Publication statusPublished - 1 Sep 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • Dye-sensitized solar cells
  • Gel electrolyte
  • Organotalc
  • PAMAM
  • Polyiodide

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