1. Home
    2. Journals
    3. Bulletin of Materials Science
    4. Volume 46
    5. All articles

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0101

    • Keywords

       

      Nanomaterials; trigonal; solution combustion; luminescence; white LEDs.

    • Abstract

       

      A homogenous crystalline Ca$_9$Y(VO$_4$)$_7$:Sm$^{3+}$ nanocrystals emanating reddish-orange light were fabricated via a simple, energy and time-saving solution combustion procedure. Structural examination revealed the trigonal symmetry with the space group R3c(161). Rietveld refinement procedure was adapted to calculate the lattice parameters and refinement factors. Morphological investigations revealed the agglomerated particles in the nano-range. The optical analysis examined a resolved emission peak at 603 nm via ${}^5$G$_{5/2}$ ${\rightarrow}$ ${}^6$H$_{7/2}$ transition, and $E_g$ (bandgap) values for Ca$_9$Y(VO$_4$)$_7$ (3.74 eV) and Ca$_9$Y$_{0.9}$Sm$_{0.1}$(VO$_4$)$_7$ (3.71 eV) were calculated from DR (diffuse reflectance) spectrum. Furthermore, the colour coordinates (0.5572, 0.3903), radiative lifetime (1.15 ms), quantum efficiency (58.4%) and colour purity (79.49%) were also evaluated in detail. These remarkable results proved the applicability of the targeted nanophosphors for constructing white LEDs, and various other photonic applications.

    • Author Affiliations

       

      POONAM DEVI1 PRIYANKA SEHRAWAT2 HINA DALAL1 MONIKA SHEORAN1 NEERAJ SEHRAWAT1 RAJNI DUA3 R K MALIK1

      1. Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, India
      2. Department of Chemistry, Sat Jinda Kalyana (P.G.) College, Kalanaur, Rohtak 124001, India
      3. Department of Chemistry, Government College, Dujana, Jhajjar 124102, India

    • Dates

       
      Published
      19 May 2023
      Manuscript received
      18 October 2022
      Accepted
      13 January 2023
      Final version published online
      19 May 2023

    • Supplementary Material

       

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.

Contact | Site index