Luminescent characteristics of LiCaBo₃:M (M=Eu³⁺, Sm³⁺, Tb³⁺, Ce³⁺, Dy³⁺) phosphor for white LED

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• 作者：Panlai Li ; Zhijun Wang ; Zhiping Yang ; Qinglin Guo ; Xu Li
• 关键词：White LED ; LiCaBO₃ ; M (M=Eu³⁺ ; Sm³⁺ ; Tb³⁺ ; Ce³⁺ ; Dy³⁺) ; Photoluminescence
• 刊名：Journal of Luminescence
• 出版年：2010
• 出版时间：February 2010
• 年：2010
• 卷：130
• 期：2
• 页码：222-225
• 全文大小：364 K

文摘

LiCaBO₃:M (M=Eu³⁺, Sm³⁺, Tb³⁺, Ce³⁺, Dy³⁺) phosphors were synthesized by a normal solid-state reaction using CaCO₃, H₃BO₃, Li₂CO₃, Na₂CO₃, K₂CO₃, Eu₂O₃, Sm₂O₃, Tb₄O₇, CeO₂ and Dy₂O₃ as starting materials. The emission and excitation spectra were measured by a SHIMADZU RF-540 UV spectrophotometer. And the results show that these phosphors can be excited effectively by near-ultraviolet light-emitting diodes (UVLED), and emit red, green and blue light. Consequently, these phosphors are promising phosphors for white light-emitting diodes (LEDs). Under the condition of doping charge compensation Li⁺, Na⁺ and K⁺, the luminescence intensities of these phosphors were increased.