Molecular Design Rule of Phthalocyanine Dyes for Highly Efficient Near‐IR Performance in Dye‐Sensitized Solar Cells |
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| Authors: | Prof Dr Mutsumi Kimura Hirotaka Nomoto Hiroyuki Suzuki Takuro Ikeuchi Dr Hiroyuki Matsuzaki Dr Takuro N Murakami Dr Akihiko Furube Dr Naruhiko Masaki Dr Matthew J Griffith Prof Dr Shogo Mori |
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| Institution: | 1. Faculty of Textile Science and Technology, Shinshu University, Ueda 386‐8567 (Japan), Fax: (+81)?268‐21‐5499;2. National Institute of Advanced Industrial Science and Technology (AIST), 1‐1‐1 Higashi, Tsukuba 305‐8564 (Japan) |
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| 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. |
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| Keywords: | dyes/pigments energy conversion phthalocyanines solar cells TiO2 |
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