Preparation, characterization and photoluminescence properties of ultra long SiC/SiOx nanocables

被引：27

作者：

Cai, K. F. ^{[1
]}

Zhang, A. X. ^{[1
]}

Yin, J. L. ^{[2
]}

Wang, H. F. ^{[1
]}

Yuan, X. H. ^{[3
]}

机构：

[1] Tongji Univ, Funct Mat Res Lab, Shanghai 200092, Peoples R China

[2] Tongji Univ, Shanghai Key Lab Dev & Applicat Met Funct Mat, Shanghai 200092, Peoples R China

[3] China Petr & Chem Corp, Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2008年 / 91卷 / 04期

关键词：

D O I：

10.1007/s00339-008-4495-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SiC core and SiOx shell nanocables of a few millimeters long have been prepared by pyrolysis of SiO2 nanopowder added poly(dimethyl siloxane) without catalyst in a tube furnace at 1050 degrees C in Ar. The influence of the synthesis conditions (synthesis temperature and cooling time) on the products is studied. The products obtained from different conditions are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution electron microscopy equipped with energy dispersive X-ray spectroscopy, and photoluminescence spectroscopy. The results show that the cores and the shells are crystalline and amorphous, respectively, and that the addition of SiO2 nanopowder and prolongation of cooling time both increase the diameter of the cores. The growth process of the nanocables is discussed. The photoluminescence emission bands of the nanocables are mainly from their shells.

引用

页码：579 / 584

页数：6

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