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Fluoren‐9‐ylidene‐Based Dyes for Dye‐Sensitized Solar Cells
Author(s) -
Tigreros Alexis,
RiveraNazario Danisha M.,
Ortiz Alejandro,
Martin Nazario,
Insuasty Braulio,
Echegoyen Luis A.
Publication year - 2015
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201500602
Subject(s) - moiety , chemistry , dye sensitized solar cell , fluorene , photochemistry , energy conversion efficiency , electron acceptor , acceptor , electrochemistry , absorption (acoustics) , electron donor , photovoltaic system , organic chemistry , catalysis , optoelectronics , electrolyte , electrode , optics , materials science , polymer , ecology , physics , biology , condensed matter physics
Three new dyes ( 1 – 3 ) with a triarylamine electron donor, a cyanoacrylic acid moiety as both electron acceptor and anchoring group, and a fluorene‐9‐ylidene moiety as an antenna were synthesized, and their electrochemical, photophysical, and photovoltaic properties were evaluated. Despite minor differences in absorption properties, as the starburst shape of the dyes increases and highly hindered hydrophobic groups are introduced, the measured open‐cell voltage ( V oc ) increased noticeably from 0.79 to 0.83 V, and the power‐conversion efficiency (PCE) value increased from 3.98 to 4.73 %.