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Optical study of Gd3+ and Tb3+ in KZnSO4Cl: Ce3+ Phosphor

Author Affiliations

  • 1 K.Z.S. Science College Kalmeshwar, Nagpur- 441501, INDIA

Res. J. Physical Sci., Volume 1, Issue (1), Pages 6-10, February,4 (2013)

Abstract

The optical and spectroscopic study of Gd3+ and Tb3+ ions in KZnSO4Cl matrix have been studied in this paper. The compound KZnSO4Cl: Ce, X (X= Gd or Tb) is prepared by wet chemical method. Photoluminescence (PL) of KZnSO4Cl: Ce3+ co-doped with Gd or Tb shows strong emission, and this phosphor is also efficient for Ce3+→Gd3+ and Ce3+→Tb3+ energy transfer. The Gd3+ emission by Ce3+→Gd3+ under UV wavelength peaking at 310 nm and 337 nm for an excitation of 254 nm due to 6P7/28S7/2 transitions, whereas the Tb3+ emission by Ce3+→Tb3+ under UV wavelength peaking at 490, 547, 585 nm, for the excitation of 350 nm due to 5D47FJ (J = 4, 5, 6) transitions. The purpose of the present study is to develop and understanding the photoluminescence and effect of Gd3+ andTb3+ co-doping in KZnSO4Cl:Ce3+ new luminescent materials, which can be the green phosphor in many applications such as lamp phosphors.

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