We synthesized mesoporous hollow carbon on a graphene surface (MHCG). When applied into supercapacitor electrode, MHCG electrode exhibited outstanding maintenance of energy density above 30 W h kg−1 even under 1 kW kg−1 power density.
A transistor structure composed of an individual single-walled carbon nanotube (SWNT) channel with a graphene electrode was demonstrated. The integrated arrays of transistor devices were prepared by transferring patterned graphene electrode patterns on top of the aligned SWNT along one direction. Both single and multi layer graphene were used for the electrode materials; typical p-type transistor and Schottky diode behavior were observed, respectively. Based on our fabrication method and device performances, several issues are suggested and discussed to improve the device reliability and finally to realize all carbon based future electronic systems.
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