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ACS Nano. 2011 Aug 23;5(8):6262-71. doi: 10.1021/nn201253w. Epub 2011 Jul 1.

Effective work function modulation of graphene/carbon nanotube composite films as transparent cathodes for organic optoelectronics.

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  • 1Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan 11529.

Abstract

In this study, we found that the work functions (Φ(w)) of solution-processable, functional graphene/carbon nanotube-based transparent conductors were readily manipulated, varying between 5.1 and 3.4 eV, depending on the nature of the doping alkali carbonate salt. We used the graphene-based electrodes possessing lower values of Φ(w) as cathodes in inverted-architecture polymer photovoltaic devices to effectively collect electrons, giving rise to an optimal power conversion efficiency of 1.27%.

© 2011 American Chemical Society

PMID:
21711013
[PubMed]
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