Electrical and optical studies in polyaniline nanofibre-SnO2 nanocomposites

被引：29
作者：
Sarmah, Smritimala [1 ]
Kumar, A. [1 ]
机构：
[1] Tezpur Univ, Dept Phys, Tezpur 784028, India
来源：
BULLETIN OF MATERIALS SCIENCE | 2013年 / 36卷 / 01期
关键词：
Polyaniline nanofibres; tin oxide; nanocomposites; photoluminescence; TEM; UV-vis spectroscopy; DIELECTRIC-PROPERTIES; COMPOSITES; FILMS; CONDUCTIVITY; SPECTROSCOPY; ACID;
D O I：
10.1007/s12034-013-0431-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Polyaniline nanofibre-tin oxide (PAni-SnO2) nanocomposites are synthesized and mixed with polyvinyl alcohol (PVA) as stabilizer to cast free-standing films. Composite films are characterized by X-ray diffraction studies (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence spectroscopy (PL) and UV-visible spectroscopy. XRD confirms the formation of PAni nanofibre-SnO2 nanocomposite. From TEM images, diameter of the polyaniline nanofibre and SnO2 nanoparticles in the PAni-SnO2 nanocomposite are found to be 20-60 nm. SEM results show fibrous morphology of the PAni nanofibre and spherical morphology of polyaniline-SnO2 composites. The nanocomposites exhibit high relative photoluminescence intensity in violet as well as green-yellow region of visible spectrum. From electrical conductivity measurement, it is confirmed that PAni nanofibre-SnO2 nanocomposite follows Mott's one-dimensional variable range hopping (VRH) model.
引用
收藏
页码：31 / 36
页数：6
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