Water-processed carbon nanotube/graphene hybrids with enhanced field emission properties

Meng Song; Peng Xu; Yenan Song; Xu Wang; Zhenhua Li; Xuefu Shang; Huizhen Wu; Pei Zhao; Miao Wang

doi:10.1063/1.4930966

Water-processed carbon nanotube/graphene hybrids with enhanced field emission properties

Meng Song, Peng Xu, Yenan Song, Xu Wang, Zhenhua Li, Xuefu Shang, Huizhen Wu, Pei Zhao, Miao Wang

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

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.

Original language	English
Article number	097130
Journal	AIP Advances
Volume	5
Issue number	9
DOIs	https://doi.org/10.1063/1.4930966
State	Published - 1 Sep 2015
Externally published	Yes

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title = "Water-processed carbon nanotube/graphene hybrids with enhanced field emission properties",

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.",

author = "Meng Song and Peng Xu and Yenan Song and Xu Wang and Zhenhua Li and Xuefu Shang and Huizhen Wu and Pei Zhao and Miao Wang",

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AU - Song, Meng

AU - Xu, Peng

AU - Song, Yenan

AU - Wang, Xu

AU - Li, Zhenhua

AU - Shang, Xuefu

AU - Wu, Huizhen

AU - Zhao, Pei

AU - Wang, Miao

PY - 2015/9/1

Y1 - 2015/9/1

N2 - 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.

AB - 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.

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ER -

Water-processed carbon nanotube/graphene hybrids with enhanced field emission properties

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