Russian Journal of Physical Chemistry A

, Volume 89, Issue 13, pp 2482–2486

Effect of ferromagnetic dopants on laser induced optical parameters of bismuth doped CaS phosphors

  • Sunil Kumar
  • H. C. Jeon
  • T. W. Kang
  • Devraj
  • Jaskanwal Sekhon
  • N. K. Verma
  • H. S. Bhatti
  • Ravi Kant Choubey
Photochemistry and Magnetochemistry

Abstract

The effect of ferromagnetic impurities (Fe, Co, and Ni) on the laser induced optical parameters of CaS:Bi phosphors has been studied. The studies were done for the Bismuth concentration of 0.4% in CaS phosphors due to the highest value of oscillator strength as reported earlier. The studies were conducted using nitrogen laser as a excitation source in a pulse excitation mode at room temperature. Appreciable changes in the optical properties have been detected after the addition of ferromagnetic impurities in the CaS phosphor doped with bismuth. The nature of the multiple exponential decays remains the same even after the addition of ferromagnetic impurities in the present case of bismuth-doped phosphors which is in agreement with the earlier work reported on other dopants in sulfide type phosphors. As ferromagnetic impurities enhanced the optical parameters of CaS phosphors appreciably, these studies shows that they can be used to control the transition probability and the corresponding optical parameters.

Keywords

CaS:Bi phosphors ferromagnetic laser 

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • Sunil Kumar
    • 1
  • H. C. Jeon
    • 1
  • T. W. Kang
    • 1
  • Devraj
    • 2
  • Jaskanwal Sekhon
    • 3
  • N. K. Verma
    • 4
  • H. S. Bhatti
    • 5
  • Ravi Kant Choubey
    • 6
  1. 1.Quantum Functional Semiconductor Research CenterDongguk UniversitySeoulSouth Korea
  2. 2.Department of PhysicsChaudhary Devi Lal UniversitySirsaIndia
  3. 3.Department of Chemical EngineeringThapar UniversityPatialaIndia
  4. 4.School of Physics and Materials ScienceThapar UniversityPatialaIndia
  5. 5.Department of PhysicsPunjabi UniversityPatialaIndia
  6. 6.Department of Applied Physics, Amity Institute of Applied Sciences (AIAS)Amity UniversityNoidaIndia

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