Luminescence properties of SiC/SiO2 core-shell nanowires with different radial structure

被引：30
|
作者：
Fabbri, Filippo [1 ]
Rossi, Francesca [1 ]
Attolini, Giovanni [1 ]
Salviati, Giancarlo [1 ]
Dierre, Benjamin [2 ]
Sekiguchi, Takashi [2 ]
Fukata, Naoki [3 ,4 ]
机构：
[1] IMEM CNR Inst, I-43124 Parma, Italy
[2] Natl Inst Mat Sci, Adv Elect Mat Ctr, Nano Device Characterizat Grp, Tsukuba, Ibaraki 3050044, Japan
[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan
[4] PRESTO JST, Tsukuba, Ibaraki 3050044, Japan
来源：
MATERIALS LETTERS | 2012年 / 71卷
关键词：
Silicon carbide; Silicon dioxide; Nanowires; Core-shell; Cathodoluminescence; SILICON-CARBIDE; PHOTOLUMINESCENCE;
D O I：
10.1016/j.matlet.2011.12.059
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The luminescence properties of SiC/SiO2 core/shell nanowires with different core to shell thickness ratio are analysed by SEM-Cathodoluminescence spectroscopy. The different radial NW structure, studied by transmission electron microscopy, deeply influences the efficiency of competitive radiative transitions. As the core to shell ratio decreases, the increase of a UV emission component is observed indicating that the electron-hole pairs recombine directly in the silicon dioxide and the beneficial effect of shell-induced enhancement of the core emissions is less efficient. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：137 / 140
页数：4
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