Stable dye-sensitized solar cells based on organic chromophores and ionic liquid electrolyte |
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Authors: | Daibin Kuang,Pascal Comte,Daniel P. Hagberg,Licheng Sun,Michael Grä tzel |
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Affiliation: | a Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne, Switzerland b Organic Chemistry, Center of Molecular Devices, KTH Chemical Science and Engineering, SE-10044 Stockholm, Sweden |
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Abstract: | A series of polyene-diphenylaniline based organic dyes (coded as D5, D7, D9 and D11) have been reported for the application in ionic liquid electrolyte based dye-sensitized solar cells. The effects of substitution of organic dyes on the photovoltaic performance have been investigated, which show addition of methoxy groups on the triphenylamine donor group increases short-circuit current, open-circuit voltage and photovoltaic performance. A power conversion efficiency of 6.5% under AM 1.5 sunlight at 100 mW/cm2 has been obtained with D11 dye in combination with a binary ionic liquid electrolyte, which when subjected to accelerated testing under one sun light soaking at 60 °C, the efficiency remained 90% of initial efficiency. |
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Keywords: | Organic dye Ionic liquid Nanocrystalline Dye-sensitized solar cell Impedance |
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