Dielectric and transport properties of carbon nanotube-CdS nanostructures embedded in polyvinyl alcohol matrix

被引：24

作者：

Mondal, S. P. ^{[1
]}

Aluguri, R. ^{[1
]}

Ray, S. K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 11期

关键词：

AC CONDUCTIVITY; COMPOSITES; POLYMER; NANOCOMPOSITES; ASSEMBLIES; CONSTANT;

D O I：

10.1063/1.3142296

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multiwalled carbon nanotube-CdS/polyvinyl alcohol (MWCNT-CdS/PVA) composites have been grown by a simple chemical process on one-dimensional templates. The plane-view transmission electron micrographs clearly indicate the formation of nanocrystalline CdS on the nanotube surfaces. The superior dielectric behavior of the MWCNT-CdS nanostructures over MWCNT and PVA host matrices has been demonstrated. The dc and ac transport properties of CdS carbon nanotube-insulating polymer nanocomposites have been studied using impedance spectroscopy. An enhancement in optical band gap of nanocomposites over the bulk CdS has been observed due to the quantum confinement effect in CdS nanocrystals. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3142296]

引用

页数：7

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