Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/28872

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Title
Direct influence of morphology on current generation in conjugated polymer: methanofullerene solar cells measured by near-field scanning photocurrent microscopy
Author/Creator
McNeill, C. R.;  Frohne, H.;  Holdsworth, J. L.;  Dastoor, P. C.
Description
We present near-field scanning photocurrent microscopy (NSPM) images of MEH-PPV:PCBM bulk heterojunction solar cells prepared by spin-coating from toluene and chlorobenzene. By utilising the NSPM technique, we demonstrate directly the influence of nano-scale phase-segregation features on local current generation. In particular, by using 100 nm aperture tips we show that the 500 nm diameter phase-segregated island features in toluene prepared films contribute significantly less to the overall current than the surrounding regions. Chlorobenzene prepared films show more uniform current generation on the length scale of 100 nm, with the photocurrent varying by only 5%.
Relation
Synthetic Metals Vol. 147, Issue 3, p. 101-104
Publisher Link
http://dx.doi.org/10.1016/j.synthmet.2004.06.042
Date
2004
Publisher
Elsevier
Keyword(s)
NSOM;  phase-segregation;  PCBM;  MEH-PPV;  bulk heterojunction solar cells
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/28872
Identifier
ISSN:0379-6779
Reviewed
Reviewed
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Subject
"Synthetic Metals"
 
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