Voltammetric and spectrophotometric measurements of poly(3,3″-dipentoxy-3′-dicyanoethenyl-2,2′:5′,2″-terthiophene) (polyCN) films, in connection with other experimental evidence, reveal a normal oxidative, but a peculiar reductive behavior consisting of trapping of the negative charge during the cathodic scan. Another interesting property of polyCN films is the tendency to form strong intramolecular and intermolecular associations, probably charge-transfer (CT) complexes. These properties could account for the fact that the photovoltaic performance does not improve when polyCN is blended with a polythiophene donor.

A Donor-Acceptor Polymer with peculiar negative-charge-“trapping” characteristic

GALLAZZI, MARIA CARMELA;BERTARELLI, CHIARA
2003

Abstract

Voltammetric and spectrophotometric measurements of poly(3,3″-dipentoxy-3′-dicyanoethenyl-2,2′:5′,2″-terthiophene) (polyCN) films, in connection with other experimental evidence, reveal a normal oxidative, but a peculiar reductive behavior consisting of trapping of the negative charge during the cathodic scan. Another interesting property of polyCN films is the tendency to form strong intramolecular and intermolecular associations, probably charge-transfer (CT) complexes. These properties could account for the fact that the photovoltaic performance does not improve when polyCN is blended with a polythiophene donor.
Charge transfer complexes,Charge trapping,Photovoltaic properties,Polythiophenes
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/524490
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