Supramolecular Solar Cells

Francis D'Souza 1Navaneetha K. Subbaiyan 

1. University of North Texas (UNT), 3940 N. Elm, Denton 76207, United States

Abstract

Supramolecular chemistry - chemistry of non-covalent bonds includes different type of interactions including ion-pairing, ion-dipole, dipole-dipole, hydrogen bonding, cation-p and Van der Waals forces.  Preorganisation and complementarity are the two most important criteria for building efficient host-guest systems that paves ways to mimic the events occurring in nature. Consequently, wide applications based on supramolecular concepts have evolved in recent years.  This includes enzyme mimics for catalysis, molecular wires, rectifiers, photochemical sensors and so on.  Recently, supramolecular chemistry is also being explored in energy harvesting and storage applications with a dream of building efficient devices for these applications. In this contest, few light energy harvesting devices have been reported based on supramolecular techniques. Here we report building supramolecular light energy harvesting devices using axial ligation and anion binding strategies with the perspective of building efficient system using custom designed sensitizers. Our approach involves modification of TiO2 with receptor sites followed by decoration of sensitizers via host-guest self-assembly approach. Due to the nature of the self-assembly methods, the mediating electrolyte solution is made out of a non-coordinating solvent. In such photocells, we were able to achieve high incident-photon-to-current (IPCE) conversion efficiency.

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Presentation: Tutorial lectore at SMCBS'2011 International Workshop, by Francis D'Souza
See On-line Journal of SMCBS'2011 International Workshop

Submitted: 2011-09-07 22:20
Revised:   2011-09-07 22:20
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