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Structural templating as a route to improved photovoltaic performance in copper phthalocyanine/fullerene (C-60) heterojunctions
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Sullivan, Paul J., Jones, T. S. (Tim S.), Ferguson, A. J. and Heutz, S. (2007) Structural templating as a route to improved photovoltaic performance in copper phthalocyanine/fullerene (C-60) heterojunctions. Applied Physics Letters, Vol.91 (No.23). doi:10.1063/1.2821229 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.2821229
Abstract
We have developed a method to improve the short circuit current density in copper phthalocyanine (CuPc)/fullerene (C-60) organic solar cells by similar to 60% by modifying the CuPc crystal orientation through use of a molecular interlayer to maximize charge transport in the direction between the two electrodes. Powder x-ray diffraction and electronic absorption spectroscopy show that a thin 3,4,9,10-perylenetetracarboxylic dianhydride interlayer before CuPc growth templates the CuPc film structure, forcing the molecules to lie flat with respect to the substrate surface, although the intrastack orientation is unaffected. This modified stacking configuration facilitates charge transport and improves charge collection.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 3 December 2007 | ||||
Dates: |
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Volume: | Vol.91 | ||||
Number: | No.23 | ||||
Number of Pages: | 3 | ||||
DOI: | 10.1063/1.2821229 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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