Effect of ion irradiation on the properties of carbon nanotube buckypapers
Effect of ion irradiation on the properties of carbon nanotube buckypapers
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DOI：
10.1080/17458080903465162
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发表时间：
2010-01
影响因子：
2.8
通讯作者：
A. Ishaq;A. Sobia;Long Yan
中科院分区：
文献类型：
--
作者：
A. Ishaq;A. Sobia;Long Yan
研究了真空过滤法制备的不同剂量Ar离子辐照的多壁碳纳米管(MWCNT)的光学、电学和结构特性。结果表明，随着Ar离子辐照剂量的增加，薄膜的直流电导率和可见光区的吸收光谱均减小。在每个辐照剂量下，在800K的真空中加热纳米管蜡纸，提高了蜡纸的导电性，而光吸收没有变化。随着Ar离子辐照剂量的增加，多壁碳纳米管的石墨结构转变为非晶态结构。MWCNT在室温下光吸收和电导的下降可以归因于辐照后MWCNT中缺陷的增加。
Optical, electrical and structural properties of argon (Ar) ion-irradiated buckypapers of multi-walled carbon nanotube (MWCNT) at various doses prepared by a vacuum filtration method were investigated. It was found that the direct current (DC) conductivity and absorption spectra in the visible range were decreased with an increasing Ar ion irradiation dose. A subsequent heating of nanotube buckypapers at 800 K in a vacuum at each irradiation dose improved the conductivity of buckypapers, whereas optical absorption was unchanged. Moreover, the graphite structure of MWCNTs was transformed to amorphous structure with an increasing Ar ion irradiation dose. The decrease of optical absorption and electrical conductivity of MWCNT buckypaper at room temperature can be ascribed to the increase of defects in the irradiated MWCNTs.