Sn-doped In2O3 nanowires: enhancement of electrical field emission by a selective area growth

被引：23

作者：

Chang, Wen-Chih ^{[1
]}

Kuo, Cheng-Hsiang ^{[1
]}

Juan, Chien-Chang ^{[1
]}

Lee, Pei-Jung ^{[1
]}

Chueh, Yu-Lun ^{[1
]}

Lin, Su-Jien ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

来源：

NANOSCALE RESEARCH LETTERS | 2012年 / 7卷

关键词：

ITO; Nanowire; Field emission; Screen effect; TIN OXIDE NANOWIRES; THIN-FILMS; SUBSTRATE; NANORODS;

D O I：

10.1186/1556-276X-7-684

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Selective area growth of single crystalline Sn-doped In2O3 (ITO) nanowires synthesized via vapor-liquid-solid (VLS) method at 600A degrees C was applied to improve the field emission behavior owing to the reduction of screen effect. The enhanced field emission performance reveals the reduction of turn-on fields from 9.3 to 6.6 V mu m(-1) with increase of field enhancement factors (beta) from 1,621 to 1,857 after the selective area growth at 3 h. Moreover, we find that the screen effect also highly depends on the length of nanowires on the field emission performance. Consequently, the turn-on fields increase from 6.6 to 13.6 V mu m(-1) with decreasing beta values from 1,857 to 699 after the 10-h growth. The detailed screen effect in terms of electrical potential and NW density are investigated in details. The findings provide an effective way of improving the field emission properties for nanodevice application.

引用

页码：1 / 7

页数：7

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