Journal
CHEMPHYSCHEM
Volume 11, Issue 13, Pages 2814-2819Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201000612
Keywords
counter electrode; dye-sensitized solar cells; ionic liquids; materials science; semiconductors
Funding
- Alexander von Humboldt-Foundation
- EU [FP7-NMP-LA-2009-229036]
- Ministry of Education, Science and Technology [R31-2008-000-10035-0]
- Ministry of Education, Science & Technology (MoST), Republic of Korea [R31-2008-000-10035-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Nanoporous layers of poly(3,4-propylenedioxythiophene) (PProDOT) were fabricated by electrical-field-assisted growth using hydrophobic ionic liquids as the growing medium. A series of PProDoT layers was prepared with three different ionic liquids to control the microstructure and electrochemical properties of the resulting dye-sensitized solar cells, which were highly efficient and showed a power conversion efficiency of > 9% under different sunlight intensities. The current-voltage characteristics of the counter electrodes varied depending on the ionic liquids used in the synthesis of PProDOT. The most hydrophobic ionic liquids exhibited high catalytic properties, thus resulting in high power conversion efficiency and allowing the fabrication of platinum-free, stable, flexible, and cost effective dye-sensitized solar cells.
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