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(D–π–) 2 D–π–A‐Type Organic Dyes for Efficient Dye‐Sensitized Solar Cells
Author(s) -
Kaewpuang Terdkait,
Prachumrak Narid,
Namuangruk Supawadee,
Jungsuttiwong Siriporn,
Sudyoadsuk Taweesak,
Pattanasattayavong Pichaya,
Promarak Vinich
Publication year - 2016
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.201600190
Subject(s) - dye sensitized solar cell , chemistry , energy conversion efficiency , electrochemistry , amine gas treating , photochemistry , solar cell , rhodanine , molar absorptivity , absorption (acoustics) , electron donor , absorption spectroscopy , conjugated system , aryl , acceptor , organic chemistry , electrode , catalysis , optoelectronics , materials science , polymer , physics , alkyl , optics , electrolyte , composite material , condensed matter physics , quantum mechanics
New (D–π–) 2 D–π–A‐type dyes (CFTT n A, n = 2, 3) with a triarylamine as electron donor, a cyanoacrylic acid as both electron acceptor and anchoring group, and two π‐conjugated 2‐[7‐(3,6‐di‐ tert ‐butylcarbazol‐9‐yl)‐9,9‐dihexylfluoren‐2‐yl]thiophenes as N ‐aryl substituents on the amine donor as co‐donors have been synthesized and characterized. Compared with a traditional D–π–A‐type dye, these dyes exhibit broader absorption spectra and higher molar extinction coefficients as well as significantly enhanced photovoltaic performances. A power conversion efficiency of 6.64 % was achieved for a dye‐sensitized solar cell (DSSC) based on CFTT3A. Theoretical calculations and electrochemical impedance spectroscopic investigations revealed the mechanism of the enhanced dye properties and cell performances.