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The influence of the microstructure upon the photovoltaic performance of MDMOPPV: PCBM bulk hetero-junction organic solar cells

Published online by Cambridge University Press:  01 February 2011

T. Martens*
Affiliation:
Instituut voor Materiaal Onderzoek (IMO), Limburgs Universitair Centrum (LUC), Wetenschapspark 1, 3590 Diepenbeek, Belgium
J. D'Haen
Affiliation:
IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
T. Munters
Affiliation:
Instituut voor Materiaal Onderzoek (IMO), Limburgs Universitair Centrum (LUC), Wetenschapspark 1, 3590 Diepenbeek, Belgium
L. Goris
Affiliation:
IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
Z. Beelen
Affiliation:
Instituut voor Materiaal Onderzoek (IMO), Limburgs Universitair Centrum (LUC), Wetenschapspark 1, 3590 Diepenbeek, Belgium
J. Manca
Affiliation:
IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
M. D'Olieslaeger
Affiliation:
IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
D. Vanderzande
Affiliation:
Instituut voor Materiaal Onderzoek (IMO), Limburgs Universitair Centrum (LUC), Wetenschapspark 1, 3590 Diepenbeek, Belgium IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
L. De Schepper
Affiliation:
Instituut voor Materiaal Onderzoek (IMO), Limburgs Universitair Centrum (LUC), Wetenschapspark 1, 3590 Diepenbeek, Belgium IMEC, Division IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
R. Andriessen
Affiliation:
Agfa-Gevaert NV, Septestraat 27, 2640 Mortsel, Belgium
*
*corresponding author. Tel.: +32 (0)11 268826; Fax: +32 (0)11 268899; E-mail: [email protected]
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Abstract

In this paper, a clear view on the bulk microstructure of MDMO-PPV:PCBM blends as used in bulk hetero-junction organic solar cells is obtained by means of TEM (Transmission Electron Microscopy). Using TEM, 3-dimensional information is acquired on phase separated regions, formed during casting. Particle statistics illustrate quantitatively that a.o. drying conditions and choice of solvent dramatically influence the blend structure. More information about the lateral blend structure and distribution is obtained in cross-sectional view. Since blend morphology is strongly related to photovoltaic performance, TEM can be a powerful tool for understanding today's photovoltaic performances and screening new sets of materials.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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