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Water-processed carbon nanotube/graphene hybrids with enhanced field emission properties
- Source :
- AIP Advances, Vol 5, Iss 9, Pp 097130-097130-6 (2015)
- Publication Year :
- 2015
- Publisher :
- AIP Publishing LLC, 2015.
-
Abstract
- Integrating carbon nanotubes (CNTs) and graphene into hybrid structures provides a novel approach to three dimensional (3D) materials with advantageous properties. Here we present a water-processing method to create integrated CNT/graphene hybrids and test their field emission properties. With an optimized mass ratio of CNTs to graphene, the hybrid shows a significantly enhanced field emission performance, such as turn-on electric field of 0.79 V/μm, threshold electric field of 1.05 V/μm, maximum current density of 0.1 mA/cm2, and field enhancement factor of ∼1.3 × 104. The optimized mass ratio for field emission emphasizes the importance of both CNTs and graphene in the hybrid. We also hypothesize a possible mechanism for this enhanced field emission performance from the CNT/graphene hybrid. During the solution treatment, graphene oxide behaves as surfactant sheets for CNTs to form a well dispersed solution, which leads to a better organized 3D structure with more conducting channels for electron transport.
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 5
- Issue :
- 9
- Database :
- Directory of Open Access Journals
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6d7f0024080439a8b7cad3e06728d9b
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.4930966