Local charge transport properties of hydrazine reduced monolayer graphene oxide sheets prepared under pressure condition
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Local charge transport properties of hydrazine reduced monolayer graphene oxide sheets prepared under pressure condition. / Ryuzaki, Sou; Meyer, Jakob Abild Stengaard; Petersen, Søren Vermehren; Nørgaard, Kasper; Hassenkam, Tue; Laursen, Bo Wegge.
I: Applied Physics Letters, Bind 105, 093109, 2014.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Local charge transport properties of hydrazine reduced monolayer graphene oxide sheets prepared under pressure condition
AU - Ryuzaki, Sou
AU - Meyer, Jakob Abild Stengaard
AU - Petersen, Søren Vermehren
AU - Nørgaard, Kasper
AU - Hassenkam, Tue
AU - Laursen, Bo Wegge
PY - 2014
Y1 - 2014
N2 - Charge transport properties of chemically reduced graphene oxide (RGO) sheets prepared by treatment with hydrazine were examined using conductive atomic force microscopy. The current-voltage (I-V) characteristics of monolayer RGO sheets prepared under atmospheric pressure followed an exponentially increase due to 2D variable-range hopping conduction through small graphene domains in an RGO sheet containing defect regions of residual sp3carbon clusters bonded to oxygen groups, whereas RGO sheets prepared in a closed container under moderate pressure showed linear I-V characteristics with a conductivity of 267.2-537.5S/m. It was found that the chemical reduction under pressure results in larger graphene domains (sp2networks) in the RGO sheets when compared to that prepared under atmospheric pressure, indicating that the present reduction of GO sheets under the pressure is one of the effective methods to make well-reduced GO sheets.
AB - Charge transport properties of chemically reduced graphene oxide (RGO) sheets prepared by treatment with hydrazine were examined using conductive atomic force microscopy. The current-voltage (I-V) characteristics of monolayer RGO sheets prepared under atmospheric pressure followed an exponentially increase due to 2D variable-range hopping conduction through small graphene domains in an RGO sheet containing defect regions of residual sp3carbon clusters bonded to oxygen groups, whereas RGO sheets prepared in a closed container under moderate pressure showed linear I-V characteristics with a conductivity of 267.2-537.5S/m. It was found that the chemical reduction under pressure results in larger graphene domains (sp2networks) in the RGO sheets when compared to that prepared under atmospheric pressure, indicating that the present reduction of GO sheets under the pressure is one of the effective methods to make well-reduced GO sheets.
U2 - 10.1063/1.4895072
DO - 10.1063/1.4895072
M3 - Journal article
AN - SCOPUS:84907007256
VL - 105
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
M1 - 093109
ER -
ID: 130944316