title: Effective work function modulation of graphene/carbon nanotube composite films as transparent cathodes for organic optoelectronics.
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%.
authors.affiliation: Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan 11529.
authors.forename: Jen-Hsien
authors.initials: JH
authors.lastname: Huang
authors.forename: Jheng-Hao
authors.initials: JH
authors.lastname: Fang
authors.forename: Chung-Chun
authors.initials: CC
authors.lastname: Liu
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Chu