Enhanced chemical shift of carbon nanotube from laser assisted gas incorporation
Resource
Applied Physics Letters, 91(18), 183101
Journal
Applied Physics Letters
Journal Volume
91
Journal Issue
18
Pages
-
Date Issued
2007
Date
2007
Author(s)
Chuang, Cheng-Hao
Chen, Chia-Hao
Chang, Yin-Ming
Peng, Chih-Wei
Wong, Sheng-Syun
Tzeng, Shien-Der
Gwo, Shangjr
Zhu, Yanwu
Sow, Chorng-Haur
Abstract
We investigate the position-selected electronic structure of laser modified carbon nanotubes (CNTs) by scanning photoelectron microscopy. After laser pruning removed the top layer of CNTs in air and N2 environment, the modified region shows enhanced chemical shifts of 0.9 and 0.6eV in carbon 1s state, respectively. The modification of electronic structure is shown to be strongly dependent on the gaseous environment. We demonstrate an effective postgrowth process to modify the electronic structure of CNTs for further applications.
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