Field emission from ordered carbon nanotube-ZnO heterojunction arrays

Xingbin Yan; Beng Kang Tay; Philippe Miele

doi:10.1016/j.carbon.2008.01.027

Field emission from ordered carbon nanotube-ZnO heterojunction arrays

Xingbin Yan^*, Beng Kang Tay, Philippe Miele

^*Corresponding author for this work

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

98 Citations (Scopus)

Abstract

Low operating electric field and stable emission current have been achieved on ordered carbon nanotube (CNT)-ZnO heterojunction arrays. Pyramid-like micropatterns were firstly prepared via capillarity-driven self-assembly from aligned CNT arrays, ZnO nanowires were subsequently grown via vapor-phase transport (VPT) method. Based on the effect of geometrical structure, low turn-on and threshold fields, and stable emission current were obtained. The high aspect ratio of ZnO nanowires leads to the high field enhancement factor. The optimal density of ZnO nanowires and the excellent interconnection between ZnO and CNT are beneficial to avoid the screening effect and improve the current stability.

Original language	English
Pages (from-to)	753-758
Number of pages	6
Journal	Carbon
Volume	46
Issue number	5
DOIs	https://doi.org/10.1016/j.carbon.2008.01.027
Publication status	Published - Apr 2008
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Materials Science

Access to Document

10.1016/j.carbon.2008.01.027

Cite this

@article{e4b6569c5f094e1cb87c344fab615d50,

title = "Field emission from ordered carbon nanotube-ZnO heterojunction arrays",

abstract = "Low operating electric field and stable emission current have been achieved on ordered carbon nanotube (CNT)-ZnO heterojunction arrays. Pyramid-like micropatterns were firstly prepared via capillarity-driven self-assembly from aligned CNT arrays, ZnO nanowires were subsequently grown via vapor-phase transport (VPT) method. Based on the effect of geometrical structure, low turn-on and threshold fields, and stable emission current were obtained. The high aspect ratio of ZnO nanowires leads to the high field enhancement factor. The optimal density of ZnO nanowires and the excellent interconnection between ZnO and CNT are beneficial to avoid the screening effect and improve the current stability.",

author = "Xingbin Yan and Tay, {Beng Kang} and Philippe Miele",

year = "2008",

month = apr,

doi = "10.1016/j.carbon.2008.01.027",

language = "English",

volume = "46",

pages = "753--758",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Limited",

number = "5",

}

TY - JOUR

T1 - Field emission from ordered carbon nanotube-ZnO heterojunction arrays

AU - Yan, Xingbin

AU - Tay, Beng Kang

AU - Miele, Philippe

PY - 2008/4

Y1 - 2008/4

N2 - Low operating electric field and stable emission current have been achieved on ordered carbon nanotube (CNT)-ZnO heterojunction arrays. Pyramid-like micropatterns were firstly prepared via capillarity-driven self-assembly from aligned CNT arrays, ZnO nanowires were subsequently grown via vapor-phase transport (VPT) method. Based on the effect of geometrical structure, low turn-on and threshold fields, and stable emission current were obtained. The high aspect ratio of ZnO nanowires leads to the high field enhancement factor. The optimal density of ZnO nanowires and the excellent interconnection between ZnO and CNT are beneficial to avoid the screening effect and improve the current stability.

AB - Low operating electric field and stable emission current have been achieved on ordered carbon nanotube (CNT)-ZnO heterojunction arrays. Pyramid-like micropatterns were firstly prepared via capillarity-driven self-assembly from aligned CNT arrays, ZnO nanowires were subsequently grown via vapor-phase transport (VPT) method. Based on the effect of geometrical structure, low turn-on and threshold fields, and stable emission current were obtained. The high aspect ratio of ZnO nanowires leads to the high field enhancement factor. The optimal density of ZnO nanowires and the excellent interconnection between ZnO and CNT are beneficial to avoid the screening effect and improve the current stability.

UR - http://www.scopus.com/inward/record.url?scp=41549121917&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41549121917&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2008.01.027

DO - 10.1016/j.carbon.2008.01.027

M3 - Article

AN - SCOPUS:41549121917

SN - 0008-6223

VL - 46

SP - 753

EP - 758

JO - Carbon

JF - Carbon

IS - 5

ER -

Field emission from ordered carbon nanotube-ZnO heterojunction arrays

Abstract

ASJC Scopus Subject Areas

Access to Document

Other files and links

Fingerprint

Cite this