Non-crystallization and enhancement of field emission of cupric oxide nanowires induced by low-energy Ar ion bombardment

被引：16

作者：

Song, Xiaomeng ^{[1
]}

Chen, Jun ^{[1
]}

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Display Mat & Technol, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 329卷

关键词：

CuO nanowire; Ion bombardment; Non-crystallization; Work function; Field emission; CARBON NANOTUBES; CUO NANOWIRES; SCALE DEFECTS; IRRADIATION; EMITTER; GROWTH; ARRAYS; O-2;

D O I：

10.1016/j.apsusc.2014.12.148

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of low energy Ar ion bombardment on the structure and field emission properties of CuO nanowires was studied. The morphology and structure were characterized by scanning electron microscopy and high resolution transmission electron microscopy. Non-crystallization of the nanowire was found after bombardment, which was due to the diffusion of the defects induced by knock-on ions. The work function of nanowires decreased after bombardment which was attributed to the preferential sputtering of oxygen. Field emission measurements showed that after bombardment with different energy the turn-on field decreased first and then increased with increasing ion energy. The lowest turn-on field was obtained with the optimal ion energy of 215 eV. The typical turn-on fields of the as-grown samples and samples after Ar ion bombardment with energy of 215 eV were about 6.5 V/mu m and 5.25 V/mu m, respectively. The lowered field emission turn-on field was attributed to the increase of field enhancement factor and decrease of work function. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：94 / 103

页数：10

共 44 条

[1] Field emission performance of multiwalled carbon nanotubes for a low-power spacecraft neutraliser [J].

Aplin, K. L. ;

Kent, B. J. ;

Song, W. ;

Castelli, C. .

ACTA ASTRONAUTICA, 2009, 64 (9-10) :875-881

[2]

Bonard J.-M., ADV MAT

[3] Electron energetics at surfaces and interfaces: Concepts and experiments [J].

Cahen, D ;

Kahn, A .

ADVANCED MATERIALS, 2003, 15 (04) :271-277

[4] Nanometer-scale sharpening and surface roughening of ZnO nanorods by argon ion bombardment [J].

Chatterjee, Shyamal ;

Behera, Akshaya K. ;

Banerjee, Amarabha ;

Tribedi, Lokesh C. ;

Som, Tapobrata ;

Ayyub, Pushan .

APPLIED SURFACE SCIENCE, 2012, 258 (18) :7016-7020

[5]

Chen R.Z. Zhan.J., 2010, J VAC SCI TECHNOL B, V28

[6] Fully sealed, high-brightness carbon-nanotube field-emission display [J].

Choi, WB ;

Chung, DS ;

Kang, JH ;

Kim, HY ;

Jin, YW ;

Han, IT ;

Lee, YH ;

Jung, JE ;

Lee, NS ;

Park, GS ;

Kim, JM .

APPLIED PHYSICS LETTERS, 1999, 75 (20) :3129-3131

[7] Effect of ion bombardment on the field emission property of tetrapod ZnO [J].

Cui, Yunkang ;

Zhang, Xiaobing ;

Lei, Wei ;

Di, Yunsong ;

Wang, Jinchan ;

Yang, Xiaxi .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (05)

[8] Improved field emission from multiwall carbon nanotubes with nano-size defects produced by ultra-low energy ion bombardment [J].

Hazra, Kiran S. ;

Koratkar, Nikhil A. ;

Misra, Devi S. .

CARBON, 2011, 49 (14) :4760-4766

[9] Field emission from various CuO nanostructures [J].

Hsieh, CT ;

Chen, JM ;

Lin, HH ;

Shih, HC .

APPLIED PHYSICS LETTERS, 2003, 83 (16) :3383-3385

[10] CuO-Nanowire Field Emitter Prepared on Glass Substrate [J].

Hsueh, H. T. ;

Hsueh, T. J. ;

Chang, S. J. ;

Tsai, T. Y. ;

Hung, F. Y. ;

Chang, S. P. ;

Weng, W. Y. ;

Dai, B. T. .

IEEE TRANSACTIONS ON NANOTECHNOLOGY, 2011, 10 (05) :1161-1165

← 1 2 3 4 5 →