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Luminescence of Er3+/ Nd3+ co-doped lithium niobate tellurite glass

Hasim, N. and Rohani, M. S. and Sahar, M. R. and Ghoshal, S. K. (2016) Luminescence of Er3+/ Nd3+ co-doped lithium niobate tellurite glass. In: 28th Regional Conference on Solid State Science and Technology, RCSSST 2014;, 25-27 Nov 2014, Pahang, Malaysia.

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Achieving tuneable photoluminescence via controlled co-doping of rare earth ions in lithium niobate based glasses are challenging. A series of Er3+/ Nd3+ co-doped tellurite glasses of composition (70-x-y) TeO2-15 Li2CO3-15 Nb2O5-(x) Er2O3-(y) Nd2O3 with x = 0; 1.0 mol % and 0 ≤ y ≤ 1.0 mol % are prepared using melt quenching technique. The influence of co-dopants on the emission properties is analyzed and discussed using partial energy level diagram of rare earth ions. The dopants concentration dependent physical properties such as refractive index, molar volume, density, polarizability and molar refractions are determined. The down-converted luminescence spectra for2G9/2 →4I9/2 transition reveal a strong green emission band centred at 497 nm is attributed to the energy transfer from erbium to neodymium ion. The emission spectra exhibit five prominent peaks centred at 497, 539, 553, 616 and 634 nm corresponding to the transitions from2H11/2,4S3/2 and4F9/2 excited states to the ground state of Er3+ ion and the transitions from2G9/2,2G7/2,2H11/2 and4F9/2 excited states to ground state of Nd3+ ion. The highest intensity is achieved for x = y = 1.0 mol%. The excellent luminescence response suggests that our glasses may be nominated for solid state lasers and other photonic applications.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Luminescence quenching, Melt-quenching, Photoluminescence
Subjects:Q Science > QC Physics
ID Code:73618
Deposited By: Mohd Zulaihi Zainudin
Deposited On:28 Nov 2017 05:01
Last Modified:28 Nov 2017 05:01

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