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A broadband yellow-green emitting mixed orthoborate–pyroborate phosphor, Ba2Sc2B4O11:Ce3+, for white light emitting diodes
Dalton Transactions ( IF 3.5 ) Pub Date : 2023-07-12 , DOI: 10.1039/d3dt01181j Feng Du 1 , Longsheng Du 1 , Wenqi Xia 1 , Qianqian Zhao 1 , Zhihua Leng 1 , Zuobin Tang 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2023-07-12 , DOI: 10.1039/d3dt01181j Feng Du 1 , Longsheng Du 1 , Wenqi Xia 1 , Qianqian Zhao 1 , Zhihua Leng 1 , Zuobin Tang 1
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The development of yellow-green phosphors for high quality white light emitting diodes (WLEDs) is critical. Herein, we successfully synthesized a mixed orthoborate–pyroborate phosphor, Ba2Sc2B4O11:Ce3+, using a high-temperature solid-state method, which exhibits bright yellow-green emission with a peak located at 540 nm and a full width at half maximum (FWHM) of 130 nm under 410 nm light excitation. In addition, the crystal structure, morphology, and thermal quenching properties of Ba2Sc2B4O11:Ce3+ were investigated in detail. The quantum yield of the optimal sample was found to be 53.3%. The concentration quenching occurred through the energy transition between the nearest-neighbor Ce3+ ions. A WLED with a low correlated color temperature (CCT = 3906 K) and a high color rendering index (Ra = 89) was prepared by coating the mixture of the phosphor Ba2Sc2B4O11:Ce3+, the commercial blue phosphor BaMgAl10O17:Eu2+ and the red phosphor CaAlSiN3:Eu2+ on a 395 nm n-UV LED chip. The results show that the yellow-green phosphor Ba2Sc2B4O11:Ce3+ could be an excellent candidate for WLEDs.
中文翻译：
宽带黄绿光混合原硼酸盐-焦硼酸盐荧光粉 Ba2Sc2B4O11:Ce3+，用于白光发光二极管
开发用于高质量白光发光二极管（WLED）的黄绿色荧光粉至关重要。在此，我们采用高温固相方法成功合成了混合原硼酸盐-焦硼酸盐荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+ ，该荧光粉表现出明亮的黄绿色发射，峰值位于540 nm，在 410 nm 光激发下，半峰全宽 (FWHM) 为 130 nm。此外，还详细研究了Ba 2 Sc 2 B 4 O 11 :Ce 3+的晶体结构、形貌和热淬火性能。最佳样品的量子产率为53.3%。浓度猝灭是通过最近邻 Ce 3+离子之间的能量跃迁发生的。通过涂覆荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+的混合物制备了具有低相关色温(CCT = 3906 K)和高显色指数( Ra = 89)的WLED。 395 nm n-UV LED 芯片上的蓝色荧光粉 BaMgAl 10 O 17 :Eu 2+和红色荧光粉 CaAlSiN 3 :Eu 2+ 。结果表明，黄绿色荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+可能是WLED 的绝佳候选材料。
更新日期：2023-07-12
中文翻译：
宽带黄绿光混合原硼酸盐-焦硼酸盐荧光粉 Ba2Sc2B4O11:Ce3+，用于白光发光二极管
开发用于高质量白光发光二极管（WLED）的黄绿色荧光粉至关重要。在此，我们采用高温固相方法成功合成了混合原硼酸盐-焦硼酸盐荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+ ，该荧光粉表现出明亮的黄绿色发射，峰值位于540 nm，在 410 nm 光激发下，半峰全宽 (FWHM) 为 130 nm。此外，还详细研究了Ba 2 Sc 2 B 4 O 11 :Ce 3+的晶体结构、形貌和热淬火性能。最佳样品的量子产率为53.3%。浓度猝灭是通过最近邻 Ce 3+离子之间的能量跃迁发生的。通过涂覆荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+的混合物制备了具有低相关色温(CCT = 3906 K)和高显色指数( Ra = 89)的WLED。 395 nm n-UV LED 芯片上的蓝色荧光粉 BaMgAl 10 O 17 :Eu 2+和红色荧光粉 CaAlSiN 3 :Eu 2+ 。结果表明，黄绿色荧光粉Ba 2 Sc 2 B 4 O 11 :Ce 3+可能是WLED 的绝佳候选材料。
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