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Flexible Field Emission of Nitrogen‐Doped Carbon Nanotubes/Reduced Graphene Hybrid Films
Author(s) -
Lee Duck Hyun,
Lee Jin Ah,
Lee Won Jong,
Kim Sang Ouk
Publication year - 2011
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201001168
Subject(s) - materials science , field electron emission , graphene , carbon nanotube , conformal coating , carbon fibers , nanotechnology , doping , electric field , substrate (aquarium) , bending , potential applications of carbon nanotubes , coating , optoelectronics , composite material , optical properties of carbon nanotubes , nanotube , composite number , physics , quantum mechanics , geology , electron , oceanography
The outstanding flexible field emission properties of carbon hybrid films made of vertically aligned N‐doped carbon nanotubes grown on mechanically compliant reduced graphene films are demonstrated. The bottom‐reduced graphene film substrate enables the conformal coating of the hybrid film on flexible device geometry and ensures robust mechanical and electrical contact even in a highly deformed state. The field emission properties are precisely examined in terms of the control of the bending radius, the N‐doping level, and the length or wall‐number of the carbon nanotubes and analyzed with electric field simulations. This high‐performance flexible carbon field emitter is potentially useful for diverse, flexible field emission devices.