Main Article Content
Abstract: Spectroscopic properties of Tb3+ and Sm3+ ions co-doped in alkali aluminoborate glasses (70-x-y)B2O3.28Li2O.2Al2O3.xSm2O3.yTb2O3 (ABL:Tb, Sm) fabricated by melting method have been studied. The emission intensity of Tb3+ or Sm3+ in ABL:Tb or ABL:Sm glasses is influenced by the Tb3+ or Sm3+doping concerning with the 0.75 mol% and 1.0 mol% optimum concentrations, respectively. The concentration quenching effect of Tb3+ or Sm3+ in ABL:Tb, Sm glasses is observed. The mechanism of this phenomenon is attributed to the f-f interaction for either Tb3+/Sm3. The ABL:Tb, Sm glasses can produce color emission from green to red by properly tuning the relative ratio between Tb3+ and Sm3+. The emission intensity of Tb3+/Sm3+ in ABL:Tb, Sm glasses can be enhanced by the energy transfer from Tb3+/Tb3+ and Sm3+/Sm3+. The results indicate that ABL:Tb, Sm may be a promising double emission for white light emitting diodes.
Keywords:Sm3+and Tb3+ ions; alkali aluminoborate glass, the concentration quenching mechanism.
. Christane Görller, Walrand and K. Binnemans; Handbook on the Physics and Chemistry of Rare Earths. Vol.25, pp 101 – 252.
. Dexter DL 1953 J. Chem. Phys. 21 836.
. Lin H, Pun EYB, Wang X, Lin X, J Alloys Compd., 2005;390:197–201.
. Li Pan Lai, Wang Yong Sheng.. and e.at, Chin.Phys B.,Vol. 21, No.12 (2012) 127804.
. Imre Á and et..all; (2006); Journal of Non-Cry… Solids, Vol. 352, Issue 8, pp. 783-788.
. P. V. Do, V.P.Tuyen, V.X.Quang,….T.Ngoc, Opt. Mater., 55(2016) 62-67
. P. V. Do…(2012), Journal of Alloys and compounds 520; pp 262-265.
. T. Ngoc; IJEIT, Vol 4,Issue 10 (2015) 152-154.
.T. Ngoc; IJEIT, Vol 8,Issue 8 (2015) 6-9.
. Tripathi G, Rai VK, Rai SB, Spectrochim Acta A, 2005; 62:1120–4.
. Tanabe S, Kang J, Hanada T, Soga N, J. Non-Cryst Solids 1998;239:170–5.
. Xie R J, Hirosaki N and Takeda T 2009 Appl. Phys. Express 2 022401
. Zhou T L, Song Z, Song X P, Bian L and Liu Q L 2010 Chin. Phys. B 19 127808