Enhanced and stable electron emission of carbon nanotube emitter arrays by post-growth hydrofluoric acid treatment

被引：23

作者：

Kim, Ki Seo ^{[2
,3
]}

Ryu, Je Hwang ^{[1
,4
]}

Lee, Chang Seok ^{[1
,4
]}

Jang, Jin ^{[1
,4
]}

Park, Kyu Chang ^{[1
,4
]}

机构：

[1] Kyung Hee Univ, Dept Informat Display, Seoul 130701, South Korea

[2] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea

[3] Kyung Hee Univ, Adv Display Res Ctr, Seoul 130701, South Korea

[4] Kyung Hee Univ, Adv Display Res Ctr, Seoul 130701, South Korea

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2009年 / 20卷

关键词：

FIELD-EMISSION;

D O I：

10.1007/s10854-007-9463-6

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Carbon nanotubes (CNT) have been highlighted as possible candidates for field-emission emitters and vacuum nanoelectronic devices. In this article, we studied the effect of acid treatment of CNTs on field emission from carbon nanotube field emitter arrays (FEAs), grown using the resist-assisted patterning process (RAP). The emission current densities of as grown CNT-FEAs and those which were later immersed in hydrofluoric acid (HF) for 20 s, were 19 mu A/cm(2) and 7.0 mA/cm(2), respectively, when measured at an anode field of 9.2 V/mu m. Hence, the emission current densities after HF treatment are 300 times larger than those of as grown CNT-FEAs. Also, it was observed that a very stable electron emission current was obtained after stressing the CNTs with an electric field of 9.2 V/mu m for 800 min in dc-mode, where the emission current non-uniformity was 0.13%. The enhancement in electron emission after HF treatment appears to be due to the effect of fluorine bonding. Also, the electron emission characteristics and structural improvement of CNT-FEAs after HF treatment are discussed.

引用

页码：120 / 124

页数：5

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