Investigation of luminescent properties of LiBZnF glass-ceramic co-doped with Eu3+/Dy3+ and Eu3+/Tb3+ ions

In this work, thermal and luminescent properties of lithium-borate glass and glass-ceramics co-doped with Eu3+/Dy3+ and Eu3+/Tb3+ ions have been investigated. The parent borate glasses were synthesized by the standard melt-quenching method. The amount of crystallites grown in the glass was controlled by the appropriate choice of annealing time and temperature. Stronger luminescence has been observed for glass-ceramics than for glass in each case. Zinc lithium borate (LiBZnF) glass-ceramics co-doped with 0.25Eu and 0.5Tb had the strongest luminescence under 388 nm laser excitation. The energy transfer mechanisms between Tb3+ and Eu3+ ions and Dy3+ and Eu3+ ions were discussed. Also, the influence of the molar ratio of active ions on the colour coordinates (CIE-1931) have been investigated.

[1]  Hongbo Zhang,et al.  Luminescence and energy transfer studies of Eu3+-Tb3+ co-doped transparent glass ceramics containing BaMoO4 crystallites , 2019, Journal of Alloys and Compounds.

[2]  Suprijadi,et al.  Structural and optical characteristics of Eu3+ ions in sodium-lead-zinc-lithium-borate glass system , 2016 .

[3]  Mingmei Wu,et al.  Energy transfer and luminescent properties of Ca8MgLu(PO4)7:Tb3+/Eu3+ as a green-to-red color tunable phosphor under NUV excitation , 2015 .

[4]  S. Schweizer,et al.  Multi-functionality of luminescent glasses for energy applications , 2015 .

[6]  M. Meneghini,et al.  GaN-based LEDs: State of the art and reliability-limiting mechanisms , 2014, 2014 15th International Conference on Thermal, Mechanical and Mulit-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE).

[7]  S. Schweizer,et al.  Lanthanide-doped glasses as frequency-converter for high-power LED applications , 2019, Optical Materials.

[8]  M. Bengisu.  Borate glasses for scientific and industrial applications: a review , 2016, Journal of Materials Science.

[9]  G. Meneghesso,et al.  Thermally Activated Degradation of Remote Phosphors for Application in LED Lighting , 2013, IEEE Transactions on Device and Materials Reliability.

[10]  Gaudenzio Meneghesso,et al.  Phosphors for LED-based light sources: Thermal properties and reliability issues , 2012, Microelectron. Reliab..

[11]  Fei Chen,et al.  Phosphor self-heating in phosphor converted light emitting diode packaging , 2013 .

[12]  R. Brow,et al.  Introduction to Glass Science and Technology , 1999 .

[13]  A. Priven.  Calculation of the Viscosity of Glass-Forming Melts: V. Binary Borate Systems , 2000 .

[14]  S. Schweizer,et al.  Temperature-dependent luminescence and energy transfer properties of Tb3+ and Eu3+ doped barium borate glasses , 2017 .