Giant dielectric constant and band gap reduction in hydrothermal grown highly crystalline zinc silicate nanorods

被引：19
作者：
Bharti, Dhiraj Kumar [1 ]
Gupta, Manoj Kumar [1 ]
Srivastava, Avanish Kumar [1 ]
机构：
[1] Acad Sci & Innovat Res AcSIR, Adv Mat & Proc Res Inst Bhopal, Adv Construct Mat Div, Bhopal 462026, Madhya Pradesh, India
来源：
MATERIALS LETTERS | 2018年 / 232卷
关键词：
Nanocrystalline materials; Dielectrics; Zinc silicate; Hydrothermal synthesis; TEM; Band gap; CERAMICS;
D O I：
10.1016/j.matlet.2018.08.085
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Highly crystalline zinc silicate (Zn2SiO4) nanorods have been synthesized by a cost-effective low-temperature hydrothermal route. X-ray diffraction analysis confirmed the crystalline willemite Zn2SiO4 phase of nanorods. The average diameter and length of nanorods were found to be 50 nm and 1-2.5 mu m, respectively in electron microscopy studies. An absorption band in the range of 200-300 nm and a significant reduction in the optical band (5.05 eV) gap was observed in UV-Vis studies. Zn2SiO4 nanorods exhibited a very high dielectric constant of about 270 which is almost ten fold higher than that of bulk Zn2SiO4. Observation of high dielectric constant and band gap reduction makes Zn2SiO4 nanorods suitable for optoelectronics, phosphors and various nano-electronics devices applications. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 69
页数：4
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