title: Blown Bubble Assembly of Graphene Oxide Patches for Transparent Electrodes in Carbon-Silicon Solar Cells.
abstract: Graphene oxide (GO) sheets have a strong tendency to aggregate, and their interfaces can impose limitations on the electrical conductivity, which would hinder practical applications. Here, we present a blown bubble film method to assemble GO sheets with a uniform distribution over a large area and further interconnect individual GO sheets by transforming the bubble film into graphitized carbon. A conventional polymer was used to facilitate the bubble blowing process and disperse GO sheets in the bubble. Then, the bubble film was annealed on a Cu substrate, resulting in a highly transparent reduced GO (RGO)-carbon hybrid structure consisting of RGO patches well adhered to the carbon film. We fabricated RGO-carbon/Si solar cells with power conversion efficiencies up to 6.42%, and the assembled RGO patches hybridized with carbon film can form an effective junction with Si, indicating potential applications in thin film electronic devices and photovoltaics.
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Shiting
authors.initials: S
authors.lastname: Wu
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China.
authors.forename: Yanbing
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Yitan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Enzheng
authors.initials: E
authors.lastname: Shi
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Mingchu
authors.initials: M
authors.lastname: Zou
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Liusi
authors.initials: L
authors.lastname: Yang
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Yang
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Anyuan
authors.initials: A
authors.lastname: Cao
keywords: blown bubble assembly; graphene oxide sheets; hybrid film; patches; solar cell; thermal annealing; transparent electrodes