• V B PAWADE

      Articles written in Bulletin of Materials Science

    • Ln$^{3+}$ (Eu$^{3+}$ and Dy$^{3+}$) luminescence in Ca$_2$SrAl$_2$O$_6$ phosphor for solid-state lighting

      A N YERPUDE S K RAMTEKE V B PAWADE N S KOKODE S J DHOBLE

      More Details Abstract Fulltext PDF

      This article reports photoluminescence in Eu$^{3+}$ and Dy$^{3+}$ doped Ca$_2$SrAl$_2$O$_6$ aluminate phosphor. Here combustion technique is used to synthesize a series of phosphors. The excitation spectra of Ca$_2$SrAl$_2$O$_6$:Eu$^{3+}$phosphor appears at 396 nm, under which we get a prominent emission bands at 590–596 nm and another peak located at 616 nm that corresponds to the orange-red region. These spectral bands are assigned due to ${}^5$D$_0$${\rightarrow}$${}^7$F$_1$, 7F2 electronic transitions of activator Eu$^{3+}$ ion, respectively. Whereas, Ca$_2$SrAl$_2$O$_6$:Dy$^{3+}$ phosphor shows two bands that correspond to 476 and 573 nm when excited by 352 nm. These two emission peaks correspond to the well-known ${}^4$F$_{9/2}$${\rightarrow}$${}^6$H$_{15/2}$, ${}^6$H$_{13/2}$ transitions of rare-earth Dy$^{3+}$ ion, respectively. Thus, from the observed photoluminescence properties, it is seen that prepared aluminate phosphor may be a suitable material for solid-state lighting.

  • 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

© 2023-2024 Indian Academy of Sciences, Bengaluru.