Electric field enhancements in In2O3-coated single-walled carbon nanotubes

被引：20
作者：
Lee, Jungwoo
Park, Taehee
Lee, Jongtaek
Lee, Sanghun
Park, Hyunjune
Yi, Whikun [1 ]
机构：
[1] Hanyang Univ, Res Inst Nat Sci, Seoul 133791, South Korea
来源：
CARBON | 2014年 / 76卷
基金：
新加坡国家研究基金会;
关键词：
EMISSION; PERFORMANCE;
D O I：
10.1016/j.carbon.2014.04.090
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In2O3 nanoparticles are coated on the surfaces of single-walled carbon nanotubes (SWCNTs) by a successive ionic layer adsorption and reaction process. The thickness of the In2O3 nanopartide film is tuned by controlling the number of coating cycles. The electric field around the In2O3-coated SWCNTs is compared with that of pristine SWCNTs. Field enhancement of the In2O3-coated SWCNTs is confirmed by conductive atomic force microscopy at low electric field (contact mode: 1 V to -1 V) and also field emission (FE) analysis at high electric field (0-4.2 V/mu m). The uniformity and emission stability are also measured via FE analysis. Near infrared and X-ray photoemission spectroscopy data are suggested to explain the charge transfer, bandgap change between the In2O3 nanoparticles and SWCNTs, and the electric field enhancements in the In2O3-coated SWCNTs at both low and high electric field. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：378 / 385
页数：8
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