The electrical and optical properties of oriented Langmuir-Blodgett films of single-walled carbon nanotubes
The electrical and optical properties of oriented Langmuir-Blodgett films of single-walled carbon nanotubes
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DOI：
10.1016/j.carbon.2011.02.009
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发表时间：
2011-06-01
期刊：
影响因子：
10.9
通讯作者：
Petty, Michael C.
中科院分区：
文献类型：
--
作者：
Massey, Mark K.;Pearson, Christopher;Petty, Michael C.
用朗缪尔-布洛杰特方法制备了含有单壁碳纳米管的透明导电薄膜。不需要使用额外的表面活性剂，可以很容易地形成厚度高达99层(300 Nm)的薄膜。光学和电学测量都显示出薄膜平面上的各向异性，这表明在沉积过程中管子是对齐的。对于大多数薄膜，在77-300K范围内的直流电导测量表明，电导率随着温度的升高而增加，即半导体特性。然而，一些样品表现出相反的效果。这种金属薄膜在电退火处理后恢复到半导体性。(C)2011爱思唯尔有限公司。保留所有权利。
Thin, transparent, electrically-conductive films containing single-walled carbon nanotubes have been fabricated using the Langmuir-Blodgett method. No additional surfactant was used and films up to 99 layers in thickness (300 nm) could readily be built-up. Both optical and electrical measurements revealed anisotropy in the film plane, suggesting alignment of the tubes during the deposition process. For the majority of films, DC conductivity measurements over the range 77-300 K showed an increase in the conductivity with increasing temperature, i.e. semi-conducting characteristics. However, some samples exhibited the opposite effect. Such metallic films reverted to semi-conducting behaviour following an electrical annealing process. (C) 2011 Elsevier Ltd. All rights reserved.