Influence of the sensitizer adsorption mode on the open-circuit potential of dye-sensitized solar cells

Filippo De Angelis, Simona Fantacci, Annabella Selloni, Michael Grätzel, Mohammed K. Nazeeruddin

Research output: Contribution to journalArticle

317 Scopus citations

Abstract

We report a combined experimental and theoretical study on the origin of the different open circuit potentials observed in dye-sensitized solar cells using Ru(ll)-polypyridyl homoleptic and heteroleptic sensitizers. We have measured the photovoltaic data of different sensitizers and used DFT calculations to analyze the electronic structure of dye-sensitized TiO 2 nanoparticles. Heteroleptic sensitizers adsorb onto TiO 2 via a single bipyridine, leading to a TiO 2 conduction band downshift and overall reduction of the cell open circuit potential.

Original languageEnglish (US)
Pages (from-to)3189-3195
Number of pages7
JournalNano Letters
Volume7
Issue number10
DOIs
StatePublished - Oct 1 2007

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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