Manuscript Number : IJSRST4157
Optical properties of Dy3+ activated MgAl2B2O7 phosphor using slow evaporation method
Authors(4) :-R. S. Palaspagar, Y. P. Manwar, R. P. Sonekar, S. K. Omanwar Present work reports, synthesis of Dy3+ activated MgAl2B2O7 (MAB) phosphor by using slow evaporation method. The prepared phosphors have been characterized by XRD, photoluminescence (PL) techniques. The photoluminescence emission spectra of the phosphors having an excitation at around 351 nm (mercury free) showed two distinguishing bands centered at around 484 nm (blue) and 577 nm (yellow) corresponding to 4F9/2-6H15/2 and 4F9/2-6H13/2 transitions of Dy3+, respectively. These phosphors have strong absorption in the near UV region. Furthermore, the chromaticity coordinate values were estimated from emission spectra of MAB. Moreover, the luminescence quenching noticed at optimum Dy3+ concentrations was due to the exchange interaction among the excited Dy3+ ions. The observed broad blue and yellow bands in Dy3+ ions show that phosphor may be applicable for white-LEDs.
R. S. Palaspagar Alumino-Borate, rare earth ions, MAB:Dy3+, quenching mechanism. Publication Details
Published in : Volume 4 | Issue 1 | January-February 2018 Article Preview
Department of Physics, SM Science College, Kelapur, Yavatmal, Maharashtra, India
Y. P. Manwar
Department of Physics, RLT Science College, Akola, Maharashtra, India
R. P. Sonekar
Department of Physics, G.S. College, Khamgaon, Buldhana, Maharashtra, India
S. K. Omanwar
Department of Physics, SGB Amravati University, Amravati, Maharashtra, India
Date of Publication : 2018-01-30
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 239-242
Manuscript Number : IJSRST4157
Publisher : Technoscience Academy
Journal URL : https://ijsrst.com/IJSRST4157
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