Controlled electrophoretic deposition of electrochemically exfoliated graphene sheets on Ag nanowires network. (3rd April 2019)

• Record Type: Journal Article
• Authors: Byranvand, Mahdi Malekshahi; Tajabadi, Fariba; Mardi, Saeed; Taghavinia, Nima; Zarandi, Ali Amiri; Dabirian, Ali
• Is Part Of: Micro & nano letters. Volume 14:Number 4(2019)
• Page Start: 389
• Page End: 393
• Publication Date: 2019-04-03
• Subjects: nanocomposites -- transparency -- electrical resistivity -- semiconductor thin films -- graphene -- silver -- electrical conductivity -- scanning electron microscopy -- electrodeposition -- nanowires -- electrophoresis -- nanofabrication; controlled electrophoretic deposition -- electrochemically exfoliated graphene sheets -- high‐quality graphene -- direct deposition -- facile electrophoretic deposition route -- electrochemically exfoliated graphene thin film -- Ag nanowires networks -- controllable film thickness -- deposition time -- potential lead -- deposited EG layers -- scanning electron microscopy results -- electrophoresis deposition -- sheet resistance -- applied potentials -- light transmittance -- electrochemical exfoliation -- large scale graphene thin films -- EG thin films -- EG dispersion -- N, N‐dimethylformamide solvent -- scanning electron microscopy -- transparency -- Ag NW transparent conductive films -- Ag NW‐EG hybrid films -- Ag -- C; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2018.5071
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Electrochemical exfoliation of graphite has recently attracted a big attention as a simple, fast and scalable method for the preparation of high quality graphene, but there are some drawbacks that hinder its application. Direct deposition is one of the most critical challenges that makes it difficult to deposit uniform, compact and large scale graphene thin films. This work develops a facile electrophoretic deposition route to fabricate exfoliated graphene (EG) film on Ag nanowires (NWs) networks with a controllable film thickness in nanometers scale. EG thin films are deposited with different applied potentials and times from an EG dispersion in N, N ‐dimethylformamide solvent. Since confirmed by light transmittance results, the increase in deposition time or applied potential lead to an increase in the number of deposited EG layers. The scanning electron microscopy results confirm the uniformity and compactness of EG films deposited on Ag NWs network. Furthermore, transparency and conductivity of Ag NWs films before and after the deposition of EG are investigated. It shows significant improvement in its performance, as a result, it leads to Ag NWs/EG hybrid films exhibiting a sheet resistance of R s = 30 Ω sq −1, and 85% light transmittance, comparable to conventional transparent conductive oxide films.