|Enhancing the Scratch Resistance by Introducing Chemical Bonding in Highly Stretchable and Transparent Electrodes|
|Guo CF; Chen Y(陈艳); Tang L; Wang F; Ren ZF; Ren, ZF (reprint author), Univ Houston, Dept Phys, 3201 Cullen Blvd, Houston, TX 77204 USA.
|Source Publication||NANO LETTERS
|Abstract||Stretchable transparent electrodes are key elements in flexible electronics and e-skins. However, existing stretchable transparent electrodes, including graphene sheets, carbon nanotube, and metal nanowire networks, weakly adheres to the substrate by van der Waals forces. Such electrodes suffer from poor scratch-resistance or poor durability, and this issue has been one of the biggest problems for their applications in industry. Here we show that, by introducing a Au-S bond between a Au nanomesh (AuNM) and the underlying elastomeric substrate, the AuNM strongly adheres to the substrate and can withstand scratches of a pressure of several megapascals. We find that the strong chemical bond, on the other hand, leads to a stiffening effect and localized rupture of the AuNM upon stretching; thus the stretchability is poor. A prestraining process is applied to suppress the localized rupture and has successfully improved the stretchability: electrical resistance of the prestrained AuNM exhibits modest change by one-time stretching to 160%, or repeated stretching to 50% for 25 000 cycles. This conductor is an ideal platform for robust stretchable photoelectronics. The idea of introducing a covalent bond to improve the scratch-resistance may also be applied to other systems including Ag nanowire films, carbon nanotube films, graphene, and so forth.|
Stretchable Transparent Electrodes
|WOS Keyword||SELF-ASSEMBLED MONOLAYERS
; SILICON SURFACE
|WOS Research Area||Chemistry
; Science & Technology - Other Topics
; Materials Science
|WOS Subject||Chemistry, Multidisciplinary
; Chemistry, Physical
; Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
; Physics, Applied
; Physics, Condensed Matter
|Funding Organization||Funding for this work was provided by the US Department of Energy under Contract Number DOE DE-SC0010831/DE-FG02-13ER46917 and National Natural Science Foundation of China under Grant No. 11202221 and 11572324.
|Corresponding Author||Ren, ZF (reprint author), Univ Houston, Dept Phys, 3201 Cullen Blvd, Houston, TX 77204 USA.|
Guo CF,Chen Y,Tang L,et al. Enhancing the Scratch Resistance by Introducing Chemical Bonding in Highly Stretchable and Transparent Electrodes[J]. NANO LETTERS,2016,16(1):594-600.
Guo CF,陈艳,Tang L,Wang F,Ren ZF,&Ren, ZF .(2016).Enhancing the Scratch Resistance by Introducing Chemical Bonding in Highly Stretchable and Transparent Electrodes.NANO LETTERS,16(1),594-600.
Guo CF,et al."Enhancing the Scratch Resistance by Introducing Chemical Bonding in Highly Stretchable and Transparent Electrodes".NANO LETTERS 16.1(2016):594-600.