Upconversion color tunability and white light generation in Yb3+ /Er3+ / Tm3+ tri-doped CaF2 single crystals

doi:10.1016/j.optmat.2018.12.060

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	Upconversion color tunability and white light generation in Yb3+ /Er3+ / Tm3+ tri-doped CaF2 single crystals
	Chen, Xueyuan; Zhang, Bo; Qian, Xiaobo; Wang, Jingya; Zheng, Lili; Hou, Jingshan; Fang, Yongzheng; Su, Liangbi
	2019-04-01
Source Publication	OPTICAL MATERIALS
ISSN	0925-3467
Volume	90 Pages:40
Subtype	Article
Abstract	Yb3+/Er3+/Tm3+ tri-doped CaF2 single crystals have been successfully synthesized via Temperature Gradient Technique (TGT) method, and represented by X-ray diffraction (XRD) examination, absorption and fluorescence spectrum, pump power dependence and lifetime analysis in details. Under the excitation of 980 nm laser diode (LD), the upconversion luminescence (UCL) spectra of Yb3+ /Er3+/Tm3+ /CaE2 as a function of Tm3+ concentration are made up of intense blue (Tm-3+:(1)G(4) -> H-3(6)), green (Er3+: S-4(3/2), H-2(11/2) -> I-4(15/2)), and red (Er3+:F-4(9/2) -> I-4(15/2)) emissions, which are located at 478, 523, 539 and 656 nm, respectively. With increasing concentration of Tm, the color can be tunable from orange-yellow, white to blue light. And the optimal Yb3+/Er3+/Tm3+ doping concentrations for white light are determined to be 10%Yb, 0.1%Er and 0.05%Tm. The research indicates that the as-prepared materials may have potential applications in the fields of three dimensional displays, back lighting, white light sources, and so on.
Keyword	Single crystal Upconversion luminescence Color tunability White light
DOI	10.1016/j.optmat.2018.12.060
Language	英语
WOS Research Area	Materials Science ; Optics
Publisher	ELSEVIER SCIENCE BV
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27209
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Chen, Xueyuan,Zhang, Bo,Qian, Xiaobo,et al. Upconversion color tunability and white light generation in Yb3+ /Er3+ / Tm3+ tri-doped CaF2 single crystals[J]. OPTICAL MATERIALS,2019,90:40.
APA	Chen, Xueyuan.,Zhang, Bo.,Qian, Xiaobo.,Wang, Jingya.,Zheng, Lili.,...&Su, Liangbi.(2019).Upconversion color tunability and white light generation in Yb3+ /Er3+ / Tm3+ tri-doped CaF2 single crystals.OPTICAL MATERIALS,90,40.
MLA	Chen, Xueyuan,et al."Upconversion color tunability and white light generation in Yb3+ /Er3+ / Tm3+ tri-doped CaF2 single crystals".OPTICAL MATERIALS 90(2019):40.

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