SiC/SiO2 core-shell nanowires with different shapes: Synthesis and field emission properties

被引：17

作者：

Cao, L. Z. ^{[1
,2
]}

Jiang, H. ^{[1
]}

Song, H. ^{[1
]}

Liu, X. ^{[1
,2
]}

Guo, W. G. ^{[1
,2
]}

Yu, S. Z. ^{[1
,2
]}

Li, Z. M. ^{[1
]}

Miao, G. Q. ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Excited State Proc, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 15-16期

关键词：

SiC nanowires; Core-shell; Formation reason; Field emission characteristic; BETA-SIC NANORODS; LARGE-SCALE SYNTHESIS; LOW-TEMPERATURE; ARC-DISCHARGE; GROWTH; FILMS;

D O I：

10.1016/j.ssc.2010.01.008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Three different shapes of SiC/SiO2 core-shell nanowires were synthesized on Si substrates through a reaction between methane and silica using iron as catalyst. Analysis of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicated that catalyst morphology was the key factor for the formation of these three different products. The field emission properties of these three nanowires were investigated. Comparing the field emission results of these three nanowires, we can obtain a conclusion that a vertically well-aligned orientation to the substrate played a very significant role in improving the field emission properties when the emitters are up to a considerable number. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：794 / 798

页数：5

共 20 条

[1] A FORMATION MECHANISM FOR CATALYTICALLY GROWN HELIX-SHAPED GRAPHITE NANOTUBES [J].