Structural, optical and electrical properties of solvothermally synthesized PbTe nanodisks

被引：23

作者：

Kungumadevi, L. ^{[1
]}

Sathyamoorthy, R. ^{[1
]}

机构：

[1] Kongunadu Arts & Sci Coll, PG & Res Dept Phys, Coimbatore 641029, Tamil Nadu, India

来源：

ADVANCED POWDER TECHNOLOGY | 2013年 / 24卷 / 01期

关键词：

Lead telluride (PbTe); Nanodisks; Electron microscopy; Resistivity; Blue shift; THERMOELECTRIC TRANSPORT-PROPERTIES; LEAD-TELLURIDE; HYDROTHERMAL SYNTHESIS; ALPHA-FE2O3; NANODISKS; PHONON-SCATTERING; NANOSTRUCTURES; SHAPE; PBS; SEMICONDUCTORS; NANOCRYSTALS;

D O I：

10.1016/j.apt.2012.06.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The present study investigates the properties of mechanically compacted pellets of nanosized lead telluride powders synthesized by using ethylene glycol as solvent and PVP as surfactant. XRD analysis indicates the formation of PbTe nanocrystals which exhibit both cubic and orthorhombic phases. Morphological study reveals that the prepared PbTe nanocrystals have disk-like shape. Electrical analysis reveals that the electrical conductivity of PbTe nanocrystals can be enhanced by the formation of nanodisks. Optical absorption and PL results show a large blue-shift which implies that the prepared PbTe nanodisks show strong quantum confinement effect. The possible formation mechanism of the PbTe nanodisks was also discussed. (C) 2012 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology japan. All rights reserved.

引用

页码：218 / 223

页数：6

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