Synthesis and enhanced properties of cerium doped ZnO nanorods

被引：86
|
作者：
Sinha, Nidhi [1 ,2 ]
Ray, Geeta [1 ]
Bhandari, Sonia [1 ]
Godara, Sanjay [1 ]
Kumar, Binay [1 ]
机构：
[1] Univ Delhi, Dept Phys & Astrophys, Crystal Lab, Delhi 110007, India
[2] Univ Delhi, Sgtb Khalsa Coll, Dept Elect, Delhi 110007, India
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 08期
关键词：
Powders: chemical preparation; Electron microscopy; Dielectric properties; Ferroelectric properties; ZnO; OPTICAL-PROPERTIES; VAPOR-DEPOSITION; GROWTH; NANOSTRUCTURES; NANOWIRES; TEMPERATURE; MORPHOLOGY; ARRAYS; MICRO;
D O I：
10.1016/j.ceramint.2014.04.079
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pure and 1 mol% Ce doped ZnO nanoparticles were synthesized by the wet chemical solution route. Ce doping shifted XRD peaks to a slightly higher angle. Transmission electron microscopy revealed the rod type morphology of both the nanoparticles with decrease in length and diameter of Ce doped ZnO in the range of 80-120 nm and 16-20 nm, respectively. A sharp lower cutoff at 190 nm and reduction in the bandgap from 3.22 eV to 3.08 eV were observed in UV-vis study. Ce3+ doping resulted in the broadening of the green emission photoluminescence band. An enhanced ionic behavior in doped ZnO resulted in a significant increase in dielectric constant (s=368), piezoelectric coefficient (d(33)=30 pC/N) and ferroelectric properties (P-r=40 mu C/cm(2)). Rectifying I-V characteristics were observed for both the nanoparticles. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：12337 / 12342
页数：6
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