Journal
DYES AND PIGMENTS
Volume 99, Issue 3, Pages 787-797Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2013.07.002
Keywords
Dye sensitized solar cells; Organic dyes; Carbazole dyes; Donor-acceptor; Frontier orbitals; HOMO-LUMO; Cyclic voltammetry
Funding
- NUS NanoCore
- National University of Singapore
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Herein we report design, synthesis, characterization and application of a series of molecules with D-pi-A structures that contain a push-pull-pull with substituted carbazole as the electron donor and cyanoacrylic acid as the electron acceptor bridged by a benzothiadiazole fragment. Theoretical, electrochemical and photophysical properties of the target molecules with respect to the chemical nature and position of substituent on the carbazole moiety were investigated in detail. The substituents on carbazole changed the solubility, packing and orientation of molecules on the TiO2 surface of DSSCs. The dye sensitized solar cell performances of the molecules were studied and compared with respect to the position and substituent. (C) 2013 Elsevier Ltd. All rights reserved.
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