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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Ceramic Materials and Processing
Presentation Title Processing and performance of a novel Ca<sub>4-<i>x</i></sub>Sr<sub><i>x</i></sub>La(BO<sub>3</sub>)<sub>3</sub>O:Eu<sup>3+</sup> (<i>x</i> = 0, 0.5, … 2) compound for next-generation white light-emitting diodes
Author(s) Senam Tamakloe, Marshall Hamon, Olivia A. Graeve
On-Site Speaker (Planned) Senam Tamakloe
Abstract Scope The investigation for high luminescence efficiency, thermally stable phosphors is crucial for advancing solid-state lighting technology. While borate-based phosphors are often desired due to their UV transparency, wide bandgaps, and exceptional optical damage thresholds, more thorough understanding of their luminescence tunability is needed. Here, we explore a systematic cation substitution strategy using a novel Ca<sub>4-<i>x</i></sub>Sr<sub><i>x</i></sub>La(BO<sub>3</sub>)<sub>3</sub>O:Eu<sup>3+</sup> system for improving photoluminescent properties for white LED applications. By controlling the Sr<sup>2+</sup> substitution at Ca<sup>2+</sup> sites (<i>x</i> = 0.5-2), we obtained single-phase phosphor materials via solution combustion synthesis that altered the structural and optical characteristics. This study finds that the Sr<sup>2+</sup> incorporation reduced the Eu<sup>3+</sup> emission intensity by 30% compared to the host compound. This study presents the relationship between optical and structural properties of a novel borate phosphors and the inherent efficiency and stability challenges of the phosphors for energy-efficient lighting applications.
Proceedings Inclusion? Planned:

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