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Applied Physics Letters , Volume 103, Issue 3.033107 (2013).
Won-Hwa Park, Seok Hwan Noh, Min Ho Joo, Tae Hyeong Kim, Wonbae Park, Myunghee Jung, Jin-San Moon, Kyu Ho Park.
Material Characterization Team, Materials and Components R&D Lab, LG Electronics Advanced Research Institute, 38, Baumoe-ro, Seocho-gu, Seoul 137-724, South Korea and
New Material Team, Future Device R&D Department, LG Electronics Advanced Research Institute, 38, Baumoe-ro, Seocho-gu, Seoul 137-724, South Korea
Abstract
We examine local electrostatic force distribution of polyethylene terephthalate (PET) film surfacebefore and after transferring graphene in order to compare the influence of local electrostaticinteraction between graphene and PET film in terms of the sheet resistance value of depositedgraphene. By using the electrical modulation of amplitude in a tapping mode AFM tip, we can obtain the distinguished electrostatic force amplitude mapping of graphene. We determine that different electrostatic attractive interactions between Au-coated tip and bare PET are present and the observed difference can affect the graphene formation and electrical performance, which correlates with the sheet resistance difference.
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