化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (5) : 87-90.

新材料与新技术

Eu³⁺单掺和Er³⁺/Yb³⁺共掺Ba₃Lu₄O₉的发光性能研究

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Spectroscopic property of Eu³⁺ doped and Er³⁺/Yb³⁺ codoped Ba₃Lu₄O₉

Tong Rui, Wu Ting, Liao Liwen, Zhao Shilong

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文章历史 +

Received
2017-01-03
Issue Date	Revised Date
2018-07-03	2017-01-03

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摘要

采用高温固相法制得稀土掺杂的镥酸钡(Ba₃Lu₄O₉)荧光粉。采用铕离子(Eu³⁺)为结构探针离子,研究了基质中稀土离子所处格位的对称性。在323～573℃温度范围内和980nm的激发下,观察到强的上转换发光绿光和红光发射,分别对应于Er³⁺的²H_11/2→⁴I_15/2,⁴S_3/2→⁴I_15/2和 ⁴F_9/2→⁴I_15/2跃迁。研究了不同温度下铒/镱(Er³⁺/Yb³⁺)共掺Ba₃Lu₄O₉的上转换发光。并对 ²H_11/2和 ⁴S_3/2能级的荧光强度比进行了分析,建立了上转换特性与温度的函数关系,在573℃时最大灵敏度达到0.0067℃^-1。结果表明,研究的荧光材料可应用于温度传感器。

Abstract

Rare earth doped Ba₃Lu₄O₉ phosphors were prepared via the conventional solid-sate reaction method.Eu³⁺ was used as a structural probe ion to elucidate the local site symmetry around rare earth ions.Intense green and red upconversion luminescence was observed in the Er³⁺/Yb³⁺ codoped Ba₃Lu₄O₉ phosphor under 980nm excitation,which were attributed to ²H_11/2→⁴I_15/2,⁴S_3/2→⁴I_15/2 and ⁴F_9/2→⁴I_15/2 transitions of Er³⁺ ions,respectively.The fluorescence intensity ratio (FIR) of two thermally-coupled levels (²H_11/2 and ⁴S_3/2) of Er³⁺ ions was studied as a function of temperature in the range of 323～573℃ and the maximum sensor sensitivity was found to be 0.0067℃^-1 at 573℃.These results suggested that the present phosphor material was a promising candidate for optical temperature sensors.

关键词

稀土掺杂 / 荧光粉 / 温度传感器

Key words

rare earth doping / phosphor / temperature sensor

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Eu³⁺单掺和Er³⁺/Yb³⁺共掺Ba₃Lu₄O₉的发光性能研究[J]. 化工新型材料, 2018, 46(5): 87-90 DOI:

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