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Organic ionic plastic crystal electrolytes; a new class of electrolyte for high efficiency solid state dye-sensitized solar cells

journal contribution
posted on 01.06.2011, 00:00 authored by V Armel, Maria ForsythMaria Forsyth, D MacFarlane, Jenny PringleJenny Pringle
Dye-sensitized solar cells are an increasingly promising alternative to conventional silicon solar cells as a method of converting solar energy to electricity and thus providing an effectively inexhaustible energy source. However, the most efficient of these devices currently utilize liquid electrolytes, which suffer from the associated problems of leakage and evaporation. Hence, significant research is currently focused on the development of solid state alternatives. Here we report a new class of solid state electrolyte for these devices, organic ionic plastic crystal electrolytes, that allow relatively rapid diffusion of the redox couple through the matrix, which is critical to the cell performance. A range of different organic ionic plastic crystal materials, utilizing different cation and anion structures, have been investigated and the conductivities, diffusion rates and photovoltaic performance of the electrolytes are reported. The best material, utilizing the dicyanamide anion, achieves efficiencies of more than 5%.

History

Journal

Energy and environmental science

Volume

4

Issue

6

Pagination

2234 - 2239

Publisher

Royal Society of Chemistry

Location

Cambridge, U. K.

ISSN

1754-5692

eISSN

1754-5706

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2011, The Royal Society of Chemistry