Mechanism of Enhanced Photocurrent of Graphene by Polymer and Metal Nanoparticles
- Authors
- Kim, Un Jeong; Hur, Jaehyun
- Issue Date
- Oct-2017
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Graphene; Photocurrent; Doping; Polystyrene; Gold Nanoparticle
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.17, no.10, pp.7270 - 7274
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 17
- Number
- 10
- Start Page
- 7270
- End Page
- 7274
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5653
- DOI
- 10.1166/jnn.2017.14731
- ISSN
- 1533-4880
- Abstract
- We present a novel method for controlling the electronic band structure and photocurrent for graphene by introducing polymer interlayer and metal nanoparticles. Specifically, polystyrene spincoated onto the graphene led to a slight change in the electric (p-doping) and optoelectronic properties (photocurrent) of the graphene as revealed by electrical characterizations and photocurrent mapping analyses, respectively. When polystyrene was combined with gold nanoparticles, the plasmonic-enhanced photocurrent was consistent across the graphene surface. Furthermore, the p-doping effect by polystyrene and gold nanoparticles was evaluated by Raman spectrum and 2D/G Raman mapping analyses.
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