1. Molecular Design Rule of Phthalocyanine Dyes for Highly Efficient Near-IR Performance in Dye-Sensitized Solar Cells.
- Author
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Kimura, Mutsumi, Nomoto, Hirotaka, Suzuki, Hiroyuki, Ikeuchi, Takuro, Matsuzaki, Hiroyuki, Murakami, Takuro N., Furube, Akihiko, Masaki, Naruhiko, Griffith, Matthew J., and Mori, Shogo
- Subjects
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ENERGY conversion , *PHTHALOCYANINES , *DYE-sensitized solar cells , *NEAR infrared radiation , *PICOSECOND pulses , *FLUORESCENCE spectroscopy , *CARBOXYLIC acids - Abstract
A series of zinc-phthalocyanine sensitizers ( PcS16- 18) with different adsorption sites have been designed and synthesized in order to investigate the dependence of adsorption-site structures on the solar-cell performances in zinc-phthalocyanine based dye-sensitized solar cells. The change of adsorption site affected the electron injection efficiency from the photoexcited dye into the nanocrystalline TiO2 semiconductor, as monitored by picosecond time-resolved fluorescence spectroscopy. The zinc-phthalocyanine sensitizer PcS18, possessing one carboxylic acid directly attached to the ZnPc ring and six 2,6-diisopropylphenoxy units, showed a record power conversion efficiency value of 5.9 % when used as a light-harvesting dye on a TiO2 electrode under one simulated solar condition. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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