Issue 8, 2011
From the journal:

Journal of Materials Chemistry

Mobility and photovoltaic performance studies on polymer blends: effects of side chains volume fraction

Getachew Adam,ab   Almantas Pivrikas,a   Alberto M. Ramil,a   Sisay Tadesse,ab   Teketel Yohannes,b   Niyazi S. Sariciftcia  and  Daniel A. M. Egbe*a  

* Corresponding authors

a Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, Linz, Austria
E-mail: daniel_ayuk_mbi.egbe@jku.at
Fax: +43-732-2468-8770
Tel: +43-732-2468-8398

b Addis Ababa University, Faculty of Science, Department of Chemistry, PO Box 1176, Addis Ababa, Ethiopia

Abstract

A 1 : 1 mixture of two thiophene based poly(p-phenylene ethynylene)-alt-poly(p-phenylene vinylene)s denoted DO-PThE1-PPV2 (D1) and MEH-PThE1-PPV2 (D2), consisting of the same conjugated backbone but different types and volume fraction of alkoxy side chains on the phenylene ethynylene unit, has led to enhanced charge carrier mobility (measured using CELIV technique) as compared to the individual polymers. The resulting ternary blend with PC60BM showed better photovoltaic performance as compared to binary blends from the single polymers mixed with PCBM. This is due to the improved active layer nanomorphology in the ternary system as revealed by AFM studies.

Graphical abstract: Mobility and photovoltaic performance studies on polymer blends: effects of side chains volume fraction

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Article information

DOI
https://doi.org/10.1039/C0JM02668A
Article type
Paper
Submitted
13 Aug 2010
Accepted
04 Nov 2010
First published
06 Dec 2010

J. Mater. Chem., 2011,21, 2594-2600

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Mobility and photovoltaic performance studies on polymer blends: effects of side chains volume fraction

G. Adam, A. Pivrikas, A. M. Ramil, S. Tadesse, T. Yohannes, N. S. Sariciftci and D. A. M. Egbe, J. Mater. Chem., 2011, 21, 2594 DOI: 10.1039/C0JM02668A

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