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A High‐Light‐Harvesting‐Efficiency Coumarin Dye for Stable Dye‐Sensitized Solar Cells
Author(s) -
Wang Z.S.,
Cui Y.,
Hara K.,
Danoh Y.,
Kasada C.,
Shinpo A.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200601020
Subject(s) - dye sensitized solar cell , materials science , energy conversion efficiency , coumarin , optoelectronics , organic dye , photochemistry , chemical engineering , electrode , organic chemistry , chemistry , engineering , electrolyte
A new coumarin dye (see figure) for use in dye‐sensitized solar cells (DSSCs) is reported. It exhibits near‐unity light harvesting efficiency and incident photon‐to‐electron conversion efficiency (see figure) over a wide spectral region in 6 μm transparent TiO 2 films. DSSCs based on this metal‐free organic dye show long‐term stability and power‐conversion efficiencies of around 6 % under continuous light‐soaking stress for up to 1000 h.