A comparative study on the structural and optical properties of PbO and Zn doped PbO nanocrystals

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• 作者：N. Mythili (1)
  K. T. Arulmozhi (2)
  
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：25
• 期：9
• 页码：3984-3989
• 全文大小：840 KB
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• 作者单位：N. Mythili (1)
  K. T. Arulmozhi (2)
  
  1. Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608002, Tamil Nadu, India
  2. Physics Wing (DDE), Annamalai University, Annamalai Nagar, Chidambaram, 608002, Tamil Nadu, India
  
• ISSN：1573-482X

文摘

Zinc (Zn) doped lead oxide (PbO) nanoparticles were synthesized with different doping concentrations of Zn by chemical precipitation method. X-ray diffraction results show evidence of the shift in 2θ values towards higher angle, which indicates the substitution of Zn2+ atoms into the Pb2+ lattice sites. Morphology of the samples was analyzed by high resolution-transmission electron microscopy and SAED pattern reveals the crystalline nature of the sample. Zn atoms create impurity energy levels in the PbO and this was confirmed by the energy gap values in ultraviolet visible spectroscopy spectra. The defect levels of the samples were analyzed by photoluminescence spectroscopy. The results indicated that 0.1?M Zn doping on PbO seems to be the minimum optimum concentration to yield well defined crystallinity with modified optical properties and it can be used in preparing photoluminescent material.