Field emission of electrons from single LaB6 nanowires

被引：167

作者：

Zhang, H

Tang, J

Zhang, Q

Zhao, GP

Yang, G

Zhang, J

Zhou, O

Qin, LC ^{[1
]}

机构：

[1] Univ N Carolina, Curriculum Appl & Mat Sci, Chapel Hill, NC 27599 USA

[2] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

ADVANCED MATERIALS | 2006年 / 18卷 / 01期

关键词：

D O I：

10.1002/adma.200500508

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Straight single-crystalline (001)-oriented LaB6 nanowires with widths ranging from 15 nm to more than 100 nm were synthesized using CVD method. Field-emission measurements on a single LaB6 nanowire showed a high emission current density of 5 × 105 Acm-2 was achieved at a voltage below 800 V and emission area equal to 6.4 nm2. These nanowires are terminated with {100} surfaces and offer improved structure as point electron sources. The low work function and low dimensionality of LaB6 nanowires offer better prospects for making improved point electron sources.

引用

收藏

页码：87 / 91

页数：5

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