Influence of Co-doping on the thermal, structural, and optical properties of sol-gel derived ZnO nanoparticles

被引:92
作者
Bhargava, Richa [1 ]
Sharma, Prashant K. [2 ]
Dutta, Ranu K. [2 ]
Kumar, Sanjeev [3 ]
Pandey, Avinash C. [2 ]
Kumar, Naresh [1 ]
机构
[1] Motilal Nehru Natl Inst Technol, Allahabad 211004, Uttar Pradesh, India
[2] Univ Allahabad, Nanophosphor Applicat Ctr, Allahabad 211002, Uttar Pradesh, India
[3] Dharmsinh Desai Univ, Shah Schulman Ctr Surface Sci & Nanotechnol, Nadiad 387001, Gujarat, India
关键词
Oxides; Sol-gel growth; Optical properties; HYDROTHERMAL SYNTHESIS; RAMAN; PHOTOLUMINESCENCE; MN;
D O I
10.1016/j.matchemphys.2009.11.024
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In the present study, thermal, structural, and optical properties of sol-gel derived Zn1-xCoxO (x = 0.05, 0.10, 0.15 and 0.20) nanoparticles were studied. These nanoparticles were characterized by using Thermogravimetry/Differential thermal analysis (TG/DTA), X-ray diffraction (XRD), Photoluminescence (PL), Raman, and Transmission electron microscopy (TEM). The process of sol-gel for the Zn1-xCoxO synthesis undergoes three stage weight loss, in the case of lower Co concentrations (x <= 0.15) before yielding Zn1-xCoxO nanoparticles. However, for x = 0.20, two stage weight loss have been observed in TG/DTA analysis. The XRD data shows single phase Zn1-xCoxO for the lower (x <= 0.15) Co concentration, while a secondary phase of Co3O4 is evolved for x = 0.20. The Raman and Photoluminescence data support the secondary phase formation for x = 0.20 in Zn1-xCoxO. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:393 / 398
页数:6
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