Photoemission spectroscopy of single-walled carbon nanotube bundles

被引：52

作者：

Suzuki, S ^{[1
]}

Bower, C

Kiyokura, T

Nath, KG

Watanabe, Y

Zhou, O

机构：

[1] Nippon Telegraph & Tel Corp, Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

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

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

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2001年 / 114卷

基金：

美国国家航空航天局;

关键词：

single-walled carbon nanotube; intercalation; photoemission; work function; valence band states;

D O I：

10.1016/S0368-2048(00)00294-2

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The electronic structures and the work functions of pristine and Cs-intercalated single-walled carbon nanotube bundles were investigated by C 1s and valence band photoemission spectroscopy. The C 1s spectrum of the pristine material showed a Doniach-Sunjic type asymmetry, indicating the existence of metallic tubes. The work function of the pristine bundles was found to be 4.8 eV, which is about 0.2 eV larger than that of graphite. A drastic decrease of the work function to about 2.0 eV was observed in the Cs-intercalated sample. The Cs intercalation also caused a nearly two-order increase in the spectral intensity at the Fermi level. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：225 / 228

页数：4

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