Luminescence and luminescence quenching of Srb>3b>Lub>2b>(Sib>3b>Ob>9b>)b>2b>:Ce³⁺ phosphors

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• 作者：I. Mikalauskaite^a ; E. Raudonyte-Svirbutaviciene^a ; A. Linkeviciute^b ; M. Urbonas^a ; A. Katelnikovas^a ; ^{arturas.katelnikovas@chf.vu.lt}
• 关键词：Phosphor ; Thermal quenching ; Quantum efficiency ; Silicate ; Luminescence
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：184
• 期：Complete
• 页码：185-190
• 全文大小：2856 K
• 卷排序：184

文摘

A series of near-UV to blue emitting Sr3Lu2(Si3O9)2:Ce3+ phosphors were prepared by a solid state reaction. The optical properties of synthesized phosphors were investigated as a function of Ce3+ concentration and temperature. These luminescent materials strongly absorb UV radiation shorter than 360 nm. The optimal Ce3+ concentration was 0.1% (external quantum efficiency ca. 45%). Temperature dependent measurements showed that Sr3Lu2(Si3O9)2:Ce3+ phosphors possess good thermal stability and loses only about 40% to 50% of initial intensity in the temperature range of 77–500 K depending on activator concentration.