Journal
ACS NANO
Volume 5, Issue 8, Pages 6262-6271Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn201253w
Keywords
graphene; transparent electrode; solar cells; surfactant; work function; cathode
Categories
Funding
- National Science Council (NSC) of Taiwan [NSC 99-2221-E-001-012]
- Academia Sinica Research Program on Nanoscience and Nanotechnology
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In this study, we found that the work functions (Phi(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 Phi(w) as cathodes in Inverted-architecture polymer photovoltaic devices to effectively collect electrons, giving rise to an optimal power conversion efficiency of 1.27%.
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