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Use of Thienylenevinylene and Ethynyl Molecular Bridges in Organic Dyes for Dye‐Sensitized Solar Cells: Implications for Device Performance
Author(s) -
Pellejà Laia,
Dominguez Rocío,
Aljarilla Ana,
Clifford John N.,
de la Cruz Pilar,
Langa Fernando,
Palomares Emilio
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201402031
Subject(s) - moiety , aniline , thiophene , chromophore , dye sensitized solar cell , acceptor , organic dye , photochemistry , energy conversion efficiency , materials science , chemistry , optoelectronics , chemical engineering , organic chemistry , electrolyte , electrode , engineering , condensed matter physics , physics
The synthesis, full characterization, and use of a series of organic dyes with thienylenevinylene and ethynyl bridges as light‐harvesting chromophores in TiO 2 ‐based photoelectrochemical dye‐sensitized solar cells are described. A maximum light‐to‐energy conversion efficiency of η =5.47 % under standard conditions is obtained for the organic dye denoted as FL16, which consists of an N , N ‐bis(4‐hexyloxyphenyl)aniline donor moiety, an ethynylthieno[3,2‐ b ]thiophene π bridge, and a 2‐cyanoacrylic acid acceptor group. The device properties are investigated by charge extraction and transient photovoltage measurements.