Photoluminescence properties of γ-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions

	Photoluminescence properties of γ-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions
	Weihong Xue; Shuangmeng Zhai; Shiqing Xu
	2015
发表期刊	Optical Materials
卷号	45 页码:219-223
摘要	γ-Ca₃(PO₄)₂:Sm³⁺ samples were synthesized under high-pressure and high-temperature conditions. The samples were characterized by X-ray diffraction measurements. The excitation and emission spectra and fluorescence decay curves of synthesized samples were collected to study the photoluminescence properties. The excitation spectra of γ-Ca₃(PO₄)₂:Sm³⁺ exhibit a series of narrow peaks attributed to the typical f–f transition of Sm³⁺. The emission spectra of γ-Ca₃(PO₄)₂:Sm³⁺ compose of four bands attributed to transitions from ⁴G_5/2 excited state to ⁶H_J/2 (J = 5, 7, 9 and 11) ground states of Sm³⁺. The average decay lifetimes were obtained by fitting the decay curves for ⁶H_7/2 level of Sm³⁺ emission using a double exponential function. The photoluminescent spectra of γ-Ca₃(PO₄)₂:Sm³⁺show that the samples belong to a red-emitting phosphor and can be pumped in the near ultraviolet light region, which can easily be applied for NUV LED chips and thus in WLEDs. There exists a concentration quenching of Sm³⁺ in γ-Ca₃(PO₄)₂:Sm³⁺ samples. The critical concentration of Sm³⁺ in γ-Ca₃(PO₄)₂ is about 1.0 mol%.
关键词	Photoluminescence γ-ca3(Po4)2:sm3+ wled concentration Quenching
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/42920512-1/9585
专题	地球内部物质高温高压实验室
作者单位	1.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2.Key Laboratory of Orogenic Belts and Crustal Evolution, MOE; School of Earth and Space Sciences, Peking University, Beijing 100871, China 3.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
推荐引用方式 GB/T 7714	Weihong Xue；Shuangmeng Zhai；Shiqing Xu. Photoluminescence properties of γ-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions[J]. Optical Materials,2015,45:219-223.
APA	Weihong Xue；Shuangmeng Zhai；Shiqing Xu.(2015).Photoluminescence properties of γ-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions.Optical Materials,45,219-223.
MLA	Weihong Xue；Shuangmeng Zhai；Shiqing Xu."Photoluminescence properties of γ-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions".Optical Materials 45(2015):219-223.

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