New Photovoltaic Composite Materials Containing Fullerene Derivatives

Abstract

A series of new nitrogen-containing fullerene derivatives: 2-azahomo[60]fullereno- (1) nitropyrimidine, (2)-phosphate, (3)-isocyanurate derivatives and five poly(amino)[60]fullerenes has been synthesized. Composite materials based on blends of conjugated polymer poly(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene (MEH-PPV) and new fullerene derivatives have been studied. We have found that the photoluminescence of MEH-PPV is quenched by a small admixture of the fullerene derivative which assumes a high efficiency of charge separation in the composite material. Photovoltaic (PV) devices based on MEH-PPV/(1) blends have been studied.

Keywords:

• conjugated polymers
• fullerenes
• photovoltaics
• solar cells

Acknowledgments

This work was supported by the Russian Foundation for Basic Research, Grant No. 05-03-33132 and the RAS Program “Fundamental Problems of Physics and Chemistry of Nano-Scale Systems and Materials.”