A Novel Efficient Mn4+ Activated Ca14Al10Zn6O35 Phosphor: Application in Red-Emitting and White LEDs

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• 作者：Wei L眉 ; Wenzhen Lv ; Qi Zhao ; Mengmeng Jiao ; Baiqi Shao ; Hongpeng You
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：November 17, 2014
• 年：2014
• 卷：53
• 期：22
• 页码：11985-11990
• 全文大小：476K
• ISSN：1520-510X

文摘

A new, highly efficient deep red-emitting phosphor Ca₁₄Al₁₀Zn₆O₃₅:Mn⁴⁺ was developed as a component of solid-state white light-emitting diodes (LEDs). The structural and optical characterization of the phosphor is described. The phosphor exhibits strong emission in the range of 650鈥?00 nm when excited by 460 nm excitation, with a quantum efficiency approaching 50%. Concentration dependence of Mn⁴⁺ luminescence in Ca₁₄Al₁₀Zn₆O₃₅:Mn⁴⁺ is investigated. Attempts to understand the thermal stability on the basis of the thermal quenching characteristics of Ca₁₄Al₁₀Zn₆O₃₅:Mn⁴⁺ is presented. The results suggest that phosphors deriving from Ca₁₄Al₁₀Zn₆O₃₅:Mn⁴⁺ have potential application for white LEDs. In addition, influence of cation substitution on the luminescence intensity of these phosphors is elucidated.