1. Co-sensitization of Organic Dyes for Efficient Ionic Liquid Electrolyte-Based Dye-Sensitized Solar Cells.
- Author
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Daibin Kuang, Pablo Walter, Frank Nüesch, Sanghoon Kim, Jaejung Ko, Pascal Comte, Shaik M. Zakeeruddin, Mohammad K. Nazeeruddin, and Michael Grätzel
- Subjects
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DIRECT energy conversion , *PHOTOVOLTAIC cells , *SOLAR cells , *SOLAR energy - Abstract
The co-sensitization of two organic dyes (SQ1 and JK2), which are complementary in their spectral responses, shows enhanced photovoltaic performance compared with that of an individual organic dye-sensitized solar cell. The power conversion efficiency of the co-sensitized organic dye solar cell based on the newly developed binary ionic liquid (solvent-free) electrolyte gives 6.4% under AM 1.5 sunlight at 100 mW/cm2irradiation, which is higher than that of individual dye-sensitized solar cells. The incident monochromatic photon-to-current conversion efficiency (IPCE) of the co-sensitized solar cell shows typical absorption peaks at 530 and 650 nm corresponding to the two dyes and displays a broad spectral response over the entire visible spectrum with IPCE of >40% in the 400−700 nm wavelength domain. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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