Triphenylamine-functionalized corrole sensitizers for solar-cell applications
New corrole sensitizers having a triphenylamine moiety at the –meso position and a carboxylic anchoring group at the pyrrole‐β position, in both free‐base and copper complex forms, have been designed, synthesized, and tried as sensitizers in dye‐sensitized solar cells. All the substituted carboxy‐co...
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Published in | Physica status solidi. A, Applications and materials science Vol. 212; no. 1; pp. 194 - 202 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
Blackwell Publishing Ltd
01.01.2015
Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | New corrole sensitizers having a triphenylamine moiety at the –meso position and a carboxylic anchoring group at the pyrrole‐β position, in both free‐base and copper complex forms, have been designed, synthesized, and tried as sensitizers in dye‐sensitized solar cells. All the substituted carboxy‐corroles were completely characterized from structural, optical and electrochemical points of view. Computational investigations by means of density functional theory (DFT) and time‐dependent‐DFT (TD‐DFT) calculations have been carried out, in order to give a deep insight into the charge‐injection process. Quite low photovoltaic performances were obtained, particularly for the investigated copper complexes, possibly due to an unfavorable energy‐level alignment between the dye's injecting states and TiO2 conduction band, limiting the charge injection and thus the photocurrent extracted from the devices. Our study may provide the guidelines for future development of more efficient solar‐cell sensitizers.
Scheme of a dye‐sensitized solar cell (DSC) based on a triphenylamine‐corrole dye and a I–/I3– electrolyte. |
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Bibliography: | ark:/67375/WNG-1MG4WLX6-6 DST-EU ESCORT (FP7-ENERGY-2010) - No. 261920 istex:BA67E0D14516878471CF47659A54D86498B1AB7C ArticleID:PSSA201431169 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1862-6300 1862-6319 |
DOI: | 10.1002/pssa.201431169 |