Effect of Co substitution on the structural and optical properties of ZnO nanoparticles synthesized by sol-gel route

被引：192

作者：

Arshad, Mohd ^{[2
]}

Azam, Ameer ^{[1
,2
,3
]}

Ahmed, Arham S. ^{[2
]}

Mollah, S. ^{[1
]}

Naqvi, Alim H. ^{[2
]}

机构：

[1] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

[2] Aligarh Muslim Univ, Dept Appl Phys, Ctr Excellence Mat Sci Nanomat, Aligarh 202002, Uttar Pradesh, India

[3] King Abdulaziz Univ, Ctr Nanotechnol, Jeddah 21413, Saudi Arabia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 33期

关键词：

ZnO; Sol-gel; XRD; TEM; EDAX; FTIR; ZINC-OXIDE; THIN-FILMS; AB-INITIO; TEMPERATURE; FERROMAGNETISM; PARTICLES; MAGNETISM; EXCHANGE; CENTERS; CU;

D O I：

10.1016/j.jallcom.2011.05.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Co doped ZnO nanoparticles were synthesized by sol-gel method and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), Energy dispersive X-ray analysis (EDAX), UV-Visible absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR). XRD analysis revealed the formation of single phase structure of all samples which was further supported by FTIR data. With the increase in Co concentration from 0% to 5%, crystallite size was observed to vary from 27.1 to 21.3 nm. It suggests the prevention of crystal growth as a result of Co doping in ZnO. It was also evident from the absorption spectra that the absorbance tends to increase with the increase in dopant concentration. Optical band gap was found to increase slightly with the increase in Co content, confirming the size reduction as a result of Co doping. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：8378 / 8381

页数：4

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