Adhesion of Silver Nano Wire Graphene Composite Film

Abstract

Silver nanowire graphene (AgNW-GN) composite, as an alternative transparent conductive film (TCF) to conventional indium tin oxide (ITO), has much improved mechanical and electrical properties. These advantages make AgNW-GN an ideal TCF for planar devices. The adhesion of AgNW-GN composite film plays a critical role in these applications. However, the effect of silver nanowire on the adhesion between AgNW-GN and copper substrate remains unexplored. In the present work, AgNW-GN composite films with different AgNW concentrations were prepared and their adhesion with copper substrates was characterized using the double cantilever beam (DCB) experiment and the digital image correlation (DIC). The interfacial failures were characterized using scanning electron microscopy (SEM), Raman spectroscopy, and atomic force microscopy (AFM). The results showed the brittle to ductile interfacial fracture transition with increased amount of AgNW. The interfacial traction separation relations (TSR) were subsequently extracted. The competing interfacial failure mechanism was discovered and modeled between the interfaces of epoxy/composite and composite/copper. The associated transfer criterion was subsequently established combining both experimental and modeling results.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Keywords and Phrases

Adhesion; Atomic force microscopy; Cantilever beams; Conductive films; Copper; Electric resistance measurement; Graphene; Nanocomposite films; Nanowires; Scanning electron microscopy; Silver; Substrates; Tin oxides; D. digital image correlation (DIC); Double cantilever beam; Dry transfers; Interfacial failures; Mechanical and electrical properties; Silver nanowires; Traction-separation relations; Transparent conductive films; Failure (mechanical); Adhesion; Dry transfer; Graphene; TCF

International Standard Serial Number (ISSN)

0021-9797

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Academic Press Inc., All rights reserved.

Publication Date

01 Feb 2019

PubMed ID

30316121

Link to Full Text

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