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Photoinduced Charge Carriers in a Donor-Acceptor Double-Cable Polythiophene with Covalently Bound Tetracyanoanthraquinodimethane Moieties

Published online by Cambridge University Press:  21 March 2011

Gerald Zerza ,
Antonio Cravino ,
Helmut Neugebauer ,
Rafael Gómez ,
José L. Segura ,
Nazario Martín ,
Mattias Svensson ,
Mats R. Andersson  and
N. Serdar Sariciftci
Gerald Zerza
Affiliation:
Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria
Antonio Cravino
Affiliation:
Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria
Helmut Neugebauer
Affiliation:
Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria
Rafael Gómez
Affiliation:
Departamento de Química Orgánica, Universidad Complutense de Madrid, 28040 Madrid, Spain
José L. Segura
Affiliation:
Departamento de Química Orgánica, Universidad Complutense de Madrid, 28040 Madrid, Spain
Nazario Martín
Affiliation:
Departamento de Química Orgánica, Universidad Complutense de Madrid, 28040 Madrid, Spain
Mattias Svensson
Affiliation:
Polymer Technology, Chalmers University of Technology, SE-41 296 Goteborg, Sweden
Mats R. Andersson
Affiliation:
Polymer Technology, Chalmers University of Technology, SE-41 296 Goteborg, Sweden
N. Serdar Sariciftci
Affiliation:
Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, A-4040 Linz, Austria
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Abstract

The preparation of double-cable polymers, which consist of a hole conducting conjugated chain carrying pendant electron accepting/conducting moieties, is a promising strategy to prevent donor/acceptor phase segregation and to achieve defined microscopic structure in organic bulk heterojunction solar cells. In this paper we report the electrochemical synthesis and the investigation of a double-cable consisting of a polythiophene backbone bearing, via covalent bonds, electron accepting tetracyanoanthraquinodimethane (TCAQ) type moieties. Electrochemical studies and UV- VIS absorption spectroscopy reveal, that in dark, the polythiophene chain and the TCAQ moieties retain their individual ground-state properties. Upon illumination photoinduced electron transfer occurs, which is studied by photoinduced VIS-NIR absorption spectroscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 660: Symposia JJ – Organic Electronic & Photonic Materials and Devices , 2000 , JJ8.11
Copyright
Copyright © Materials Research Society 2001

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References

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