Thickness dependence and solution-degradation effect in poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester based solar cells

The performance of bulk-heterojunction solar cells made with poly(3-hexylthiophene) (P3HT) as the donor and phenyl-C61-butyric acid methyl ester (PCBM) as the acceptor depends strongly on various factors in fabrication processes. This work studies the effect of the thickness of the P3HT:PCBM layer p...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2010-03, Vol.94 (3), p.465-470
Main Authors: Jin, Hui, Olkkonen, Juuso, Tuomikoski, Markus, Kopola, Pälvi, Maaninen, Arto, Hast, Jukka
Format: Article
Language:English
Subjects:
Degradation
Film thickness
Fullerene
Photovoltaic
Polymer
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Summary:The performance of bulk-heterojunction solar cells made with poly(3-hexylthiophene) (P3HT) as the donor and phenyl-C61-butyric acid methyl ester (PCBM) as the acceptor depends strongly on various factors in fabrication processes. This work studies the effect of the thickness of the P3HT:PCBM layer produced in the spin coating process on photovoltaic performances. Thickness dependent optical absorption in P3HT:PCBM layer is numerically modelled and the results are compared with experimental data. In addition, it is analyzed how degradation of air-exposed P3HT:PCBM blends depends on the storage time in nitrogen atmosphere.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2009.11.007