Microstructure-tunable highly conductive graphene-metal composites achieved by inkjet printing and low temperature annealing

We present a method for fabricating highly conductive graphene-silver composite films with a tunable microstructure achieved by means of an inkjet printing process and low temperature annealing. This is implemented by starting from an aqueous ink formulation using a reactive silver solution mixed with graphene nanoplatelets (GNPs), followed by inkjet printing deposition and annealing at 100 degrees C for silver formation. Due to the hydrophilic surfaces and the aid of a polymer stabilizer in an aqueous solution, the GNPs are uniformly covered with a silver layer. Simply by adjusting the content of GNPs in the inks, highly conductive GNP/Ag composites (> 106 S m(-1)), with their microstructure changed from a large-area porous network to a compact film, is formed. In addition, the printed composite films show superior quality on a variety of unconventional substrates compared to its counterpart without GNPs. The availability of composite films paves the way to the metallization in different printed devices, e.g. interconnects in printed circuits and electrodes in energy storage devices.

Song, ManUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)manso801 (författare)
Wen, ChenyuUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)chewe730 (författare)
Majee, SubimalUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)subma871 (författare)
Yang, DongNorthwest Univ, Coll Chem & Mat Sci, Minist Educ, Key Lab Synthet & Nat Funct Mol Chem, Xian 710069, Shaanxi, Peoples R China. (författare)
Wu, BiaoNorthwest Univ, Coll Chem & Mat Sci, Minist Educ, Key Lab Synthet & Nat Funct Mol Chem, Xian 710069, Shaanxi, Peoples R China. (författare)
Zhang, Shi-LiUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)shizh725 (författare)
Zhang, Zhi-BinUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)zhizh813 (författare)
Uppsala universitetFasta tillståndets elektronik (creator_code:org_t)

Ingår i:Journal of Micromechanics and Microengineering: IOP PUBLISHING LTD28:30960-13171361-6439

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