Enhanced field emission from injector-like ZnO nanostructures with minimized screening effect

C. Li; Y. Yang; X. W. Sun; W. Lei; X. B. Zhang; B. P. Wang; J. X. Wang; B. K. Tay; J. D. Ye; G. Q. Lo; D. L. Kwong

doi:10.1088/0957-4484/18/13/135604

Enhanced field emission from injector-like ZnO nanostructures with minimized screening effect

C. Li, Y. Yang, X. W. Sun^*, W. Lei, X. B. Zhang, B. P. Wang, J. X. Wang, B. K. Tay, J. D. Ye, G. Q. Lo, D. L. Kwong

^*Corresponding author for this work

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

76 Citations (Scopus)

Abstract

Injector-like zinc oxide (ZnO) nanostructures have been synthesized on Si substrate by the vapour phase transport method. Samples with different areal densities were obtained by controlling the temperature. The field emission properties of the injector-like ZnO nanostructures showed a clear dependence on the areal density of the nanostructures, which is due to the screening effect. The samples with a needle length of 850 nm and an areal density of 1 × 10⁸ cm^-2 showed the lowest field emission turn-on field of 1.85 V μm^-1 at a current density of 10 μA cm^-2, and the current density reaches 1 mA cm^-2 at an applied field of 4.7 V μm^-1.

Original language	English
Article number	135604
Journal	Nanotechnology
Volume	18
Issue number	13
DOIs	https://doi.org/10.1088/0957-4484/18/13/135604
Publication status	Published - Apr 4 2007
Externally published	Yes

ASJC Scopus Subject Areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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Cite this

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title = "Enhanced field emission from injector-like ZnO nanostructures with minimized screening effect",

abstract = "Injector-like zinc oxide (ZnO) nanostructures have been synthesized on Si substrate by the vapour phase transport method. Samples with different areal densities were obtained by controlling the temperature. The field emission properties of the injector-like ZnO nanostructures showed a clear dependence on the areal density of the nanostructures, which is due to the screening effect. The samples with a needle length of 850 nm and an areal density of 1 × 108 cm-2 showed the lowest field emission turn-on field of 1.85 V μm-1 at a current density of 10 μA cm-2, and the current density reaches 1 mA cm-2 at an applied field of 4.7 V μm-1.",

author = "C. Li and Y. Yang and Sun, {X. W.} and W. Lei and Zhang, {X. B.} and Wang, {B. P.} and Wang, {J. X.} and Tay, {B. K.} and Ye, {J. D.} and Lo, {G. Q.} and Kwong, {D. L.}",

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doi = "10.1088/0957-4484/18/13/135604",

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T1 - Enhanced field emission from injector-like ZnO nanostructures with minimized screening effect

AU - Li, C.

AU - Yang, Y.

AU - Sun, X. W.

AU - Lei, W.

AU - Zhang, X. B.

AU - Wang, B. P.

AU - Wang, J. X.

AU - Tay, B. K.

AU - Ye, J. D.

AU - Lo, G. Q.

AU - Kwong, D. L.

PY - 2007/4/4

Y1 - 2007/4/4

N2 - Injector-like zinc oxide (ZnO) nanostructures have been synthesized on Si substrate by the vapour phase transport method. Samples with different areal densities were obtained by controlling the temperature. The field emission properties of the injector-like ZnO nanostructures showed a clear dependence on the areal density of the nanostructures, which is due to the screening effect. The samples with a needle length of 850 nm and an areal density of 1 × 108 cm-2 showed the lowest field emission turn-on field of 1.85 V μm-1 at a current density of 10 μA cm-2, and the current density reaches 1 mA cm-2 at an applied field of 4.7 V μm-1.

AB - Injector-like zinc oxide (ZnO) nanostructures have been synthesized on Si substrate by the vapour phase transport method. Samples with different areal densities were obtained by controlling the temperature. The field emission properties of the injector-like ZnO nanostructures showed a clear dependence on the areal density of the nanostructures, which is due to the screening effect. The samples with a needle length of 850 nm and an areal density of 1 × 108 cm-2 showed the lowest field emission turn-on field of 1.85 V μm-1 at a current density of 10 μA cm-2, and the current density reaches 1 mA cm-2 at an applied field of 4.7 V μm-1.

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Enhanced field emission from injector-like ZnO nanostructures with minimized screening effect

Abstract

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