Optical Properties of Dy3+ and Ce3+ in Borate Glass
Main Article Content
Abstract
Spectroscopic properties of Dy3+ and Ce3+ ions doped alkali metal borate glasses (70-x-y)B2O3.15Li2CO3.15Na2CO3.xDy2O3 and yCeO2 (BLN:Dy,Ce) fabricated by melting method have been studied. Energy transfer from the absorption and fluorescence center has been discussed. Judd–Ofelt (J-O) theory has been used to evaluate various spectroscopic properties such as oscillator strengths (fexp, fcal), intensity parameters Ωl(l=2,4,6), spontaneous transition probabilities (AR), radiative life times (tR) and luminescence branching ratios (σexp, σR). The cross-relaxation mechanism was discussed for BLN glass.
Keywords: Alkali metal borate glass, Energy transfer, cross-relaxation mechanism.
Optical Properties of Dy3+ and Ce3+ in Borate Glass
References
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[3] Judd BR, Phy Rev (1962),127:750–61.
[4] Jørgensen CK, Reisfeld R, J Less-Common Met. (1983), 93:pp.107–120.
[5] Lin H, Pun EYB, Wang X, Lin X, J Alloys Compd, (2005), 390:pp.197–201.
[6] Ofelt GS, J Chem Phys (1962), 37:511–20 “fluoroborate glasses”, Opt Mater (2000), 15: pp. 65–79.
[7] S.A. Saleema, B.C. Jamalaiah, M. Jayasimhadri, A. Srinivasa Rao,Kiwan Jang, L. Rama Moorthy; Journal of Quantitative Spectroscopy & Radiative Transfer (2011), pp.78–84.
[8] Surendra Babu S, Babu P, Jayasankar CK, Siewers W, Wortmann G, Opt. Mater, (2009), 31:624–31.
[9] Sardar DK, Bradley WM, Yow RM, Gruber JB, Zandi B, J Lumin , (2004), 106:pp.195–203.
[10] Tripathi G, Rai VK, Rai SB, Spectrochim Acta A, (2005);62:1120–4.
[11] Tanabe S, Kang J, Hanada T, Soga N, J. Non-Cryst Solids, (1998);239:170–5.
[12] Yang Z, Li B, He F, Luo L, Chen W, J Non-Cryst Solids , (2008);354:1198–200.