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 6P7/2→8S7/2 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 5D4→7FJ (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.
References
- Kiliaan H.S., Meijerink A. and Blasse G., A better resolution expected for lower concentrations, J. Lum., 35, 155- 160 (1986)
- Kiliaan H.S., Kotle J.F.A.K. and Blasse G., The need for mercury-free fluorescent lamps for general lighting, J.Electroche Soc.,134, 2359 - 2366 (1987)
- Lammers M.J.J. and Blasse G., Energy transfer phenomena in Tb3+ activated Godolinium Tantalate (GdTaO), Mat.Res.Bull.,19, 759-768 (1984)
- DeVries A.J., Kiliaan H.S., and Blasse G., Investigation of energy migration in luminescent diluted Gd/sup3+systems, J.Solid State Chem., 65, 190-198 (1987)
- Reisfeld R., Greenberg E. and Velapoldi R.,Luminescence Quantum Efficiency of Gd and Tb in Borate Glasses and the Mechanism of Energy Transfer between Them, J. Chem.Phys. 56, 1698-1705 (1972)
- Blasse G., Reminiscencies of a quenched luminescence investigatory, Phys. Status Solidi (a),73, 205 – 208 (1982)
- Bozhevolnov V.E., Ivanov L.N., Kozlov V.K., Voronov Yu. V., Timofeev Yu.P. and Karelin V.V., Energy transfer in CaF2 [BOND] Gd, Mn crystals, Phys. Stat. Sol. (b), 78,483 – 487 (1976)
- Brixner L.H. and Blasse G., X-ray excited 6G and lower term emission from the Gd3+ ion, Chem.Phys.Lett., 157, 283 – 288 (1989)
- Blasse G., Sytsma J. and Brixner L.H., Higher-level emission and vibronics, Chem.Phys.Lett., 155, 64–68 (1989)
- Blasse G., and Bril A.,Study of Energy Transfer from Sb3+, Bi3+, Ce3+ to Sm3+, Eu3+, Tb3+, Dy3+, J. Chem. Phys.,47,1920- 1926 (1967)
- de Hair, J.Th.W. Energy transfer in luminescence process of YTaO4: Gd; Eu, J.Lumin. 18, 797 - 802 (1979)
- Parrish J.A. and Jacnicke K.F., Action spectrum for photo- therapy of psoriasis, J. Invest. Dermatol. 76, 359–362 (1981)
- Gedam S.C. et al., Synthesis and effect of Ce3+ co-doping on photoluminescence characteristics of KZnSOCl: M (M = Dy3+ or Mn2+) new phosphors, J.Lumin, 121, 450-455 (2006)
- Cheng S.D., Kam C.H., Buddhudu S., Green phosphorescence of CaAl2O4:Tb3+, Ce3+ through persistence energy transfer, Mater. Res. Bull., 36, 1131- 1137 (2001)
- Sommerdijk J.L., Vestegen J.M.P.J., Concentration dependence of the Ce3and Tb3luminescence of Ce1xTbxMgAl1, J. Lumin., 9, 415-419 (1974)
- Hoffman M.V., Effect of thorium on Ce+3 phosphors, J. Electrochem. Soc.,118, 1508–1512 (1971)