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Rigid-Rod Sensitizers bound to Semiconductor Nanoparticles

Published online by Cambridge University Press:  01 February 2011

Olena Taratula  and
Elena Galoppini
Olena Taratula
Affiliation:
[email protected], Rutgers University, Dept.Of Chemistry, 73 Warren Street, Newark, NJ, 07102, United States, 1-973-353-5056
Elena Galoppini
Affiliation:
[email protected], Rutgers University, Chemistry Department, 73 Warren Street, Newark, NJ, 07102, United States
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Abstract

A series of “rigid-rod” dyes with an organic chromophore (pyrene or coumarin) attached through an oligophenylenethynylene (OPE) rigid bridge, linear or branched, to an anchoring isopthalic acid unit (Ipa) were synthesized and studied for solar cells (DSSCs) applications. The new dyes were attached to metal oxide (MOn = TiO2, ZrO2 and ZnO) nanoparticles films via the two COOH binding groups on the Ipa unit to investigate their binding and photophysical properties at the semiconductor surface. FTIR-ATR spectra show that all dyes did bind to the metal oxide films through carboxylate bonds. Fluorescence emission on insulating ZrO2 films was employed to study aggregation of the organic rigid-rods. Studies of the pyrene rigid-rods in solar cells showed near quantitative conversation of absorbed photons into electricity.

Keywords

photovoltaiccolloidsemiconducting
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1031: Symposium H – Nanostructured Solar Cells , 2007 , 1031-H09-50
Copyright
Copyright © Materials Research Society 2008

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