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2016 | 130 | 6 | 1373-1379
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Structural, Morphological and Optical Study of Bismuth and Zinc Co-Doped Yttrium Oxide Prepared by Solvothermal and Wet Chemical Method

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Yttrium oxide (Y₂O₃) is the most familiar yttrium compound, which is popularly known as host for ion doping of other rare earth elements. Bismuth ion (Bi³⁺) is well known as an activator and sensitizer in several particular phosphors. Zinc oxide (ZnO) nanomaterial, having a wide band gap, is one of the promising candidates for general illumination applications due to its high optical transparency and color tenability bismuth (Bi) and zinc (Zn) co-doped Y₂O₃ samples are synthesized by simple precipitation techniques like solvothermal and wet chemical methods. The prepared samples were characterized using X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectra, ultraviolet-visible absorbance spectroscopy and photoluminescence spectrophotometry. Ultraviolet-visible absorption studies showed absorption only around 340 nm whereas photoluminescence shows peaks around 500 nm, 680 nm, and 1020 nm for Bi and Zn co-doped Y₂O₃. The photoluminescence spectrum shows emission in blue region (500 nm) due to Zn dopant and red and near infrared region (680 and 1020 nm) due to Bi dopant. This is a new material which can effectively work as an efficient and cheap red phosphor.
  • Department of Physics, Jansons Institute of Technology, Coimbatore, Tamilnadu, India
  • Sri Shakthi Institute of Engineering and Technology, Coimbatore, Tamilnadu, India
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