Flexible Field Emission of Nitrogen-Doped Carbon Nanotubes/Reduced Graphene Hybrid Films

✍ Scribed by Duck Hyun Lee; Jin Ah Lee; Won Jong Lee; Sang Ouk Kim

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 681 KB
• Volume: 7
• Category: Article
• ISSN: 1613-6810
• DOI: 10.1002/smll.201001168

✦ Synopsis

Abstract

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.