Broadband up-conversion in SrLaAlO4: Yb3+/Ho3+/Mn4+ phosphor

Broadband up-conversion in SrLaAlO4: Yb3+/Ho3+/Mn4+ phosphor
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SrLaAlO4: Yb3 /Ho3 /Mn4 荧光粉中的宽带上转换

DOI:
10.1016/j.optmat.2020.110416
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发表时间:
2020-11
期刊:
影响因子:
3.9
通讯作者:
肖思国
肖思国
中科院分区:
材料科学3区
文献类型:
--
作者:
颜志文;黄蕊;阳效良;肖思国

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采用高温固相反应法合成了SrLaAlO 4(SLA):Yb 3 +/Ho 3 +/Mn 4+系列荧光粉。SLA:在980 nm激光激发下,Yb 3 +/Ho 3 +/Mn 4+荧光粉显示出600-800 nm的宽带红色上转换发光带,由Mn 4+:2 Eg → 4A 2g和Ho 3+:5 F5 → 5I 8,5S 2/5 F4 → 5I 7发射组成。研究了SLA:Yb ~(3+)/Ho ~(3+)/Mn ~(4+)荧光粉的上转换发光光谱、Ho ~(3+)546 nm发射寿命和泵浦功率的变化。研究认为,Yb 3 +→ Ho 3 +→ Mn 4+的能量转移是宽带红光上转换发光的主要机制,这对开发新型上转换发光材料具有参考意义。
A series of SrLaAlO4(SLA): Yb3+/Ho3+/Mn4+phosphors have been synthesized via high-temperature solid-state reaction method. The SLA: Yb3+/Ho3+/Mn4+phosphor shows a broadband red up-conversion luminescence band of 600–800 nm under the excitation of 980 nm laser excitation, which is composed of the Mn4+:2Eg→4A2gand Ho3+:5F5→5I8,5S2/5F4→5I7emissions. The Ho3+, Yb3+and Mn4+concentrations dependent up-conversion emission spectra, Mn4+concentration dependent lifetime of Ho3+546 nm emission, and pumping power dependent up-conversion behaviors of the SLA: Yb3+/Ho3+/Mn4+phosphor have been studied. It is believed that the Yb3+→Ho3+→Mn4+energy transfer is responsible for the broadband red up-conversion, which provides reference significance for exploring novel up-conversion phosphors.
DOI: 10.1039/c3ra47645f
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期刊: RSC Advances
影响因子: 3.9
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