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Meeting MS&T23: Materials Science & Technology
Symposium Solid-state Optical Materials and Luminescence Properties
Presentation Title Crystallography, Phase Stability and Luminescence Behavior of Eu-doped Ca<sub>4-x</sub>Sr<sub>x</sub>LaO(BO<sub>3</sub>)<sub>3</sub> Compounds
Author(s) Olivia A. Graeve, Senam Tamakloe
On-Site Speaker (Planned) Olivia A. Graeve
Abstract Scope White-light technologies such as white light-emitting diodes (WLEDs) are environmentally friendly and produce high luminous brightness with low energy consumption. However, their low color rendering index result in limited white-light quality caused by a deficiency in the red emission of the materials. Consequently, new luminescent materials (<i>i.e.</i>, phosphors) that produce efficient red light are needed. To enhance white-light technologies, phosphors with tunable photoluminescence, high efficacy, and high stability are required. Here, we describe the crystallography, phase stability, and luminescence response of Ca<sub>4-x</sub>Sr<sub>x</sub>LaO(BO<sub>3</sub>)<sub>3</sub>:Eu<sup>3+</sup> phosphors. The phosphors were synthesized by a simple solution combustion method with a subsequent calcination step at temperatures up to 1200C. The resultant europium-doped phosphors exhibited a red luminescence under varying near UV and blue light excitations. The phase stability, determined from X-ray diffraction, and variations of photoluminescence and cathodoluminescence with respect to strontium content will be described.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A New Family of Multinary Telluride Nanocrystals for Infrared Applications
Crystallography, Phase Stability and Luminescence Behavior of Eu-doped Ca4-xSrxLaO(BO3)3 Compounds
D-20: Fabrication and Optical Property Characterization of Silver Thin Film Using Magnetron Sputtering Method
Development of Non-cubic Fluorapatite Laser Ceramics
Fabrication and Optical Properties of Transparent Zinc Gallate Spinel Ceramics
Leveraging Material Microstructure and Linear/Non-linear Absorption for Pulsed Laser Welding of Ceramics
Overview of Optical Materials at NRL
Photoluminescent Behaviors of Mixed Metal Thiophosphates XScP2S6 (X=Ag, Cu) Above and Below Bandgap
Processing and Optical Properties of Noncubic RE-doped Ga2O3 Transparent Ceramics
Study of Garnet Scintillating Single Crystal Fiber Grown by Laser Heated Pedestal Growth Method
Study of Surface Effects in Yb3+ Doped Garnet Nanopowders for Understanding Grain Boundary Processes in Laser Ceramics: Fabrication and Spectroscopic Properties
Surface Morphology and Fracturing of Femtosecond Laser-irradiated Calcium Fluoride
Ultrafast Laser-induced Damage and Non-linear Optical Properties of Metal Thiophosphates
Ultraviolet Excitation of Trivalent Europium in Alumina

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