Preparation and photoluminescence properties of silica-coated CuO nanowires

被引：8
|
作者：
Jin, Changhyun [1 ]
Kim, Hyunsoo [1 ]
Hong, Chanseok [1 ]
Kim, Hyoun Woo [1 ]
Lee, Chongmu [1 ]
机构：
[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2010年 / 100卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
AMORPHOUS SILICA; EVAPORATION METHOD; CU2O; LUMINESCENCE; EXCITONS; SENSORS; GROWTH;
D O I：
10.1007/s00339-010-5589-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have fabricated cupric oxide (CuO)-core/silica (SiO (x) )-shell nanowires by using a two-step process: thermal oxidation and sputtering. The structure and photoluminescence (PL) properties of the core/shell nanowires has been investigated by using scanning electron microscopy, transmission electron microscopy, X-ray diffraction and PL analysis techniques. The CuO cores and the SiO (x) shells of the as-synthesized nanowires have crystalline monoclinic CuO and amorphous SiO (x) structures, respectively. The PL emission intensity of the CuO-core/SiO (x) -shell nanowires has been increased but the emission peak position has not been nearly shifted by annealing in a nitrogen atmosphere, whereas the emission peak position has been shifted a lot from 510 to around 650 nm as well as the emission intensity has been increased by annealing in an oxygen atmosphere. In addition, the origin of the PL enhancement in the CuO-core/SiO (x) -shell nanowires by annealing and the growth mechanism of the CuO nanowires have been discussed.
引用
收藏
页码：151 / 157
页数：7
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