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The Interconnection Between Efficiency and Morphology of Two Component Systems in Plastic Solar Cells

Published online by Cambridge University Press:  21 March 2011

Franz Padinger,
Desta Gebeyehu,
Christoph J. Brabec,
Thomas Fromherz,
N. Serdar Sariciftci and
Jan C. Hummelen
Franz Padinger
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells, Johannes Kepler University Linz, A-4040 Austria Tel.: +43 732 2468 766, Fax: +43 732 2468 770
Desta Gebeyehu
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells, Johannes Kepler University Linz, A-4040 Austria Tel.: +43 732 2468 766, Fax: +43 732 2468 770
Christoph J. Brabec
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells, Johannes Kepler University Linz, A-4040 Austria Tel.: +43 732 2468 766, Fax: +43 732 2468 770, Email: christoph.brabec@jk.uni-linz.ac.at
Thomas Fromherz
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells, Johannes Kepler University Linz, A-4040 Austria Tel.: +43 732 2468 766, Fax: +43 732 2468 770
N. Serdar Sariciftci
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells, Johannes Kepler University Linz, A-4040 Austria Tel.: +43 732 2468 766, Fax: +43 732 2468 770
Jan C. Hummelen
Affiliation:
Stratingh Institute and Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

Using the ultrafast photoinduced electron transfer with long-living charge separation in the conjugated polymer/fullerene thin films, photovoltaic devices have been fabricated. The photoinduced charge separation happens with internal quantum efficiency near unity. The performance of such “bulk heterojunction” photovoltaic devices is critically dependent on the transport properties of the interpenetrating network. The influence of the variation of different donor / acceptor materials on the sample morphology is monitored by atomic force microscopy (AFM), while I/V characteristics have been studied to evaluate the conversion efficiency.

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