Block copolymer morphologies in dye-sensitized solar cells: Probing the photovoltaic structure-function relation

Edward J W Crossland, Mihaela Nedelcu, Caterina Ducati, Sabine Ludwigs, Marc A. Hillmyer, Ullrich Steiner, Henry J. Snaith

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

We integrate mesostructured titania arrays into dye-sensitized solar cells by replicating ordered, oriented one-dimensional (1D) columnar and three-dimensional (3D) bicontinuous gyroid block copolymer phases. The solar cell performance, charge transport, and recombination are investigated. We observe faster charge transport in 1D "wires" than through 3D gyroid arrays. However, owing to their structural instability, the surface area of the wire arrays is low, inhibiting the solar cell performance. The gyroid morphology, on the other hand, outperforms the current state-of-the-art mesoporous nanoparticle films.

Original languageEnglish (US)
Pages (from-to)2813-2819
Number of pages7
JournalNano letters
Volume9
Issue number8
DOIs
StatePublished - Aug 12 2009

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