Selective n-Type Doping of Graphene by Photo-patterned Gold Nanoparticles
- Huh, Sung; Park, Jaesung; Kim, Kwang S.; Hong, Byung Hee; Kim, Seung Bin
- Issue Date
- ACS Nano, Vol.5 No.5, pp.3639-3644
- Selective n-type doping of graphene is developed by utilizing patternable gold nanoparticles functionalized with photoreactive cinnamate moieties. The gold nanoparticles can be regularly patterned on the graphene by UV-induced cross-linking of cinnamate, which provides a convenient method to control the optical and electrical properties of graphene site-specifically. The strong n-type doping of graphene covered with the patterned gold nanoparticles was confirmed by Raman, X-ray photoelectron spectroscopy, and electron transport measurements. We believe that our method would find numerous applications in the area of graphene-based optoelectronics including light-emitting devices, solar cells, and optical sensors.
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