Energy Transfer and Significant Improvement Moist Stability of BaMgAl10O17 : Eu2 + , Mn2 + as a Phosphor for White Light-Emitting Diodes
Energy Transfer and Significant Improvement Moist Stability of BaMgAl10O17 : Eu2 + , Mn2 + as a Phosphor for White Light-Emitting Diodes
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DOI：
10.1149/1.3454755
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发表时间：
2010-08
影响因子：
3.9
通讯作者：
W. Ke;Chun-Che Lin;Ru‐Shi Liu;Ming-Chou Kuo
中科院分区：
文献类型：
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作者：
W. Ke;Chun-Che Lin;Ru‐Shi Liu;Ming-Chou Kuo
采用固相反应法合成了Eu2+和Mn2+共掺杂的BaMgAl10O17，研究了敏化剂和激活剂浓度对其发光性能的影响。Eu2+到Mn2+的能量传递主要是通过电偶极-四极相互作用的共振型。此外，在合成过程中加入AlF3、BaF2等助熔剂，提高了湿稳定性。这对于白色发光二极管(LED)中的荧光粉尤其重要。将合成的荧光粉涂覆在紫外光LED芯片上，制成显色指数为95的白光LED，以验证其实际应用能力。
BaMgAl 10 O 17 co-doped with Eu 2+ and Mn 2+ was synthesized in a solid-state reaction and their luminescence properties were investigated as functions of the concentrations of the sensitizer and activator. The energy transfer from Eu 2+ to Mn 2+ was mainly of the resonance-type via an electric dipole-quadrupole interaction. Additionally, the addition of various fluxes such as AlF 3 and BaF 2 in the synthesis improves the moist stability. This is particularly important for the phosphor in white light-emitting diodes (LEDs). The white LEDs with a color rendering index of 95 were fabricated by coating the synthesized phosphors on a UV LED chip to verify the real application capability.