• Microwave-assisted synthesis and photoluminescence properties of ZnS:Pb$^{2+}$ nanophosphor for solid-state lighting

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/040/07/1441-1445

    • Keywords

       

      ZnS; Pb$^{2+}$; nanophosphor; microwave assisted; photoluminescence; co-precipitation.

    • Abstract

       

      Nanocrystalline ZnS:Pb$^{2+}$ phosphor was synthesized by microwave-assisted co-precipitation method. Thephase purity and surface morphology of prepared material were investigated using an X-ray diffractometer (XRD) anda scanning electron microscope. The photoluminescence property was studied by near-UV (nUV) excitation. The XRDpattern of prepared phosphor matches well with that of an ICDD (International Center for Diffraction Data) file. Surfacemorphology of prepared phosphor was found to be in submicron range. As-prepared ZnS:Pb$^{2+}$ phosphor shows a greenemission under nUV excitation. As Pb$^{2+}$ ions are located on a regular Zn$^{2+}$ site they produce a green emission band inthe range of 400–650 nm, centred at 500 nm, under excitation wavelength of 357 nm, exhibiting luminescence propertiestypically observed for Pb$^{2+}$. Effect of concentration of Pb$^{2+}$ ions on emission intensity was studied. The colour co-ordinates of prepared phosphor were calculated and found to lie in the green region of Commission Internationale de l’Eclairagediagram.

    • Author Affiliations

       

      D N GAME1 C B PALAN2 N B INGALE3 S K OMANWAR2

      1. Cusrow Wadia Institute of Technology, Pune, India
      2. Department of Physics, Sant Gadge Baba Amravati University, Amravati, India
      3. Prof. Ram Meghe Institute of Technology and Research, Badnera, Amravati, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.