Supramolecular solar cells: surface modification of nanocrytalline TiO(2) with coordinating ligands to immobilize sensitizers and dyads via metal-ligand coordination for enhanced photocurrent generation

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Authors
Subbaiyan, Navaneetha K.
Wijesinghe, Channa A.
D'Souza, Francis
Advisors
Issue Date
2009-10-21
Type
Article
Keywords
Research Projects
Organizational Units
Journal Issue
Citation
Journal of the American Chemical Society. 2009 Oct21; 131(41): 14646-7.
Abstract

An elegant method of self-assembly for modification of a TiO(2) surface using coordinating ligands followed by immobilization of variety of sensitizers and a dyad is reported. This highly versatile method, in addition to testing the photoelectrochemical behavior of different zinc tetrapyrroles, allowed the use of fairly complex structures involving more than one donor entity. Utilization of the zinc porphyrin-ferrocene dyad markedly improved the current-voltage performance of the photoelectrochemical cell through an electron transfer-hole migration mechanism. Incident photon-to-current efficiency values up to 37% were obtained for the electrode modified with the dyad, signifying the importance of photocells built on the basis of biomimetic principles for efficient harvesting of solar energy.

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Publisher
American Chemical Society
Journal
Book Title
Series
Journal of the American Chemical Society
J. Am. Chem. Soc.
PubMed ID
DOI
ISSN
1520-5126
0002-7863
EISSN