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Synthesis and characterization of simple cost-effective trans-A2BC porphyrins with various donor groups for dye-sensitized solar cellsElectronic supplementary information (SI) available: 1H NMR and mass spectra of synthesized dyes. See DOI: 10.1039/c5nj02610e
We have designed and synthesized a series of simple cost-effective 'push-pull' Zn( ii ) porphyrin dyes containing various electron donors such as 2-thienyl, pyrenyl, phenyl, 4′-bromophenyl, 4′- t butylphenyl and 4′-carboxyphenyl acceptor moieties in three steps. Their optical absorption sp...
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| Main Authors: | , , , |
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| Format: | Article |
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| Online Access: | Get full text |
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| Summary: | We have designed and synthesized a series of simple cost-effective 'push-pull' Zn(
ii
) porphyrin dyes containing various electron donors such as 2-thienyl, pyrenyl, phenyl, 4′-bromophenyl, 4′-
t
butylphenyl and 4′-carboxyphenyl acceptor moieties in three steps. Their optical absorption spectra, electrochemical redox and photovoltaic properties have been investigated in detail. The overall power conversion efficiencies (
η
) of DSSCs based on these dyes are in the range of 2.1 to 4.2% and highly depend on their donor moiety. The incorporation of
trans
-10,20-dimesityl groups is highly beneficial for preventing the π-π aggregation among the porphyrin moieties, thus favorably suppressing the charge recombination and intermolecular interaction. Among all, pyrenyl appended Zn(
ii
) porphyrin has exhibited a higher power conversion efficiency of 4.2% under 1 sun illumination due to the extended π-conjugation and electron donating ability of the pyrenyl moiety.
Zn(
ii
) porphyrin dyes have been synthesized in three steps and exhibited power conversion efficiencies of 2.1 to 4.2% which depend on the electron donating ability of the R group. |
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| ISSN: | 1144-0546 1369-9261 |
| DOI: | 10.1039/c5nj02610e |