Novel transparent conductor with enhanced conductivity: hybrid of silver nanowires and dual-doped graphene
- Authors
- Sohn, Hiesang; Woo, Yun Sung; Shin, Weonho; Yun, Dong-Jin; Lee, Taek; Kim, Felix Sunjoo; Hwang, Jinyoung
- Issue Date
- Oct-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Graphene; Dual-doping; Ag nanowire-graphene hybrid; Electrical conductivity; Flexible transparent conductive film
- Citation
- APPLIED SURFACE SCIENCE, v.419, pp 63 - 69
- Pages
- 7
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 419
- Start Page
- 63
- End Page
- 69
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/3776
- DOI
- 10.1016/j.apsusc.2017.04.129
- ISSN
- 0169-4332
1873-5584
- Abstract
- We present hybrid transparent conducting films based on silver nanowires (Ag NWs) and doped graphene through novel dual co-doping method by applying various dopants (HNO3 or Au for p-doping and N2H4 for n-doping) on top and bottom sides of graphene. We systematically investigated the effect of dual-doping on their surface as well as electrical and optical properties of graphene and Ag NW/graphene hybrid films through the combination study with various dopant types (p/p, p/n, n/p, and n/n). We found that the p/p-type dual-doped (p-type dopant: HNO3) graphene and its hybrid formation with Ag NWs appeared to be the most effective in enhancing the electrical properties of conductor (doped graphene with Delta R/R-0 = 84% and Ag NW/doped graphene hybrid with Delta R/R-0 = 62%), demonstrating doped monolayer graphene with high optical transmittance (TT = 97.4%), and sheet resistance (R-s =188 Omega/sq.). We also note that dual doping improved such electrical properties without any significant debilitation of optical transparency of conductors (doped graphene with Delta TT = 0.1% and Ag NW/doped graphene hybrid with Delta TT = 0.4%). In addition, the enhanced conductivity of p-type dual-doped graphene allows a hybrid system to form co-percolating network in which Ag NWs can form a secondary conductive path at grain boundaries of polycrystalline graphene. (C) 2017 Elsevier B.V. All rights reserved.
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