Controlled synthesis and luminescence properties from cubic to hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals

Guofeng Wang; Weiping Qin; Jisen Zhang; Lili Wang; Guodong Wei; Peifen Zhu; Ryongjin Kim

doi:10.1016/j.jallcom.2008.07.050

Controlled synthesis and luminescence properties from cubic to hexagonal NaYF₄:Ln³⁺ (Ln = Eu and Yb/Tm) microcrystals

Guofeng Wang, Weiping Qin, Jisen Zhang, Lili Wang, Guodong Wei, Peifen Zhu, Ryongjin Kim

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

Cubic and hexagonal NaYF₄:Ln³⁺ (Ln = Eu and Yb/Tm) microcrystals were separately synthesized by an EDTA-assisted solvothermal method. Under 393-nm excitation, the emission spectra of NaYF₄:Eu³⁺ microcrystals show the characteristic Eu³⁺ emissions. In the excitation spectra of the 610-nm emission, the ⁷F₀ →⁵D₃ is dominant for the cubic microcrystals, while the ⁷F₀ →⁵L₆ is dominant for the hexagonal sample. In addition, unusually strong ultraviolet emissions (¹I₆ →³H₆, ¹I₆ →³F₄, and ¹D₂ →³H₆) were observed in the hexagonal NaYF₄:Yb³⁺/Tm³⁺ microcrystals under 980-nm excitation. In comparison with a cubic sample having the same chemical compositions, the hexagonal microcrystals had a markedly enhanced ability of emitting ultraviolet up-conversion luminescence.

Original language	English
Pages (from-to)	452-455
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	475
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.07.050
State	Published - 5 May 2009
Externally published	Yes

Keywords

NaYF
Rare earth
Up/down-conversion luminescence

Access to Document

10.1016/j.jallcom.2008.07.050

Cite this

@article{d0e5f5f9fbfb4f8e8375d7d31bf965f4,

title = "Controlled synthesis and luminescence properties from cubic to hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals",

abstract = "Cubic and hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals were separately synthesized by an EDTA-assisted solvothermal method. Under 393-nm excitation, the emission spectra of NaYF4:Eu3+ microcrystals show the characteristic Eu3+ emissions. In the excitation spectra of the 610-nm emission, the 7F0 → 5D3 is dominant for the cubic microcrystals, while the 7F0 → 5L6 is dominant for the hexagonal sample. In addition, unusually strong ultraviolet emissions (1I6 → 3H6, 1I6 → 3F4, and 1D2 → 3H6) were observed in the hexagonal NaYF4:Yb3+/Tm3+ microcrystals under 980-nm excitation. In comparison with a cubic sample having the same chemical compositions, the hexagonal microcrystals had a markedly enhanced ability of emitting ultraviolet up-conversion luminescence.",

keywords = "NaYF, Rare earth, Up/down-conversion luminescence",

author = "Guofeng Wang and Weiping Qin and Jisen Zhang and Lili Wang and Guodong Wei and Peifen Zhu and Ryongjin Kim",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 10474096 and 50672030).",

year = "2009",

month = may,

day = "5",

doi = "10.1016/j.jallcom.2008.07.050",

language = "English",

volume = "475",

pages = "452--455",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Controlled synthesis and luminescence properties from cubic to hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals

AU - Wang, Guofeng

AU - Qin, Weiping

AU - Zhang, Jisen

AU - Wang, Lili

AU - Wei, Guodong

AU - Zhu, Peifen

AU - Kim, Ryongjin

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 10474096 and 50672030).

PY - 2009/5/5

Y1 - 2009/5/5

N2 - Cubic and hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals were separately synthesized by an EDTA-assisted solvothermal method. Under 393-nm excitation, the emission spectra of NaYF4:Eu3+ microcrystals show the characteristic Eu3+ emissions. In the excitation spectra of the 610-nm emission, the 7F0 → 5D3 is dominant for the cubic microcrystals, while the 7F0 → 5L6 is dominant for the hexagonal sample. In addition, unusually strong ultraviolet emissions (1I6 → 3H6, 1I6 → 3F4, and 1D2 → 3H6) were observed in the hexagonal NaYF4:Yb3+/Tm3+ microcrystals under 980-nm excitation. In comparison with a cubic sample having the same chemical compositions, the hexagonal microcrystals had a markedly enhanced ability of emitting ultraviolet up-conversion luminescence.

AB - Cubic and hexagonal NaYF4:Ln3+ (Ln = Eu and Yb/Tm) microcrystals were separately synthesized by an EDTA-assisted solvothermal method. Under 393-nm excitation, the emission spectra of NaYF4:Eu3+ microcrystals show the characteristic Eu3+ emissions. In the excitation spectra of the 610-nm emission, the 7F0 → 5D3 is dominant for the cubic microcrystals, while the 7F0 → 5L6 is dominant for the hexagonal sample. In addition, unusually strong ultraviolet emissions (1I6 → 3H6, 1I6 → 3F4, and 1D2 → 3H6) were observed in the hexagonal NaYF4:Yb3+/Tm3+ microcrystals under 980-nm excitation. In comparison with a cubic sample having the same chemical compositions, the hexagonal microcrystals had a markedly enhanced ability of emitting ultraviolet up-conversion luminescence.

KW - NaYF

KW - Rare earth

KW - Up/down-conversion luminescence

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DO - 10.1016/j.jallcom.2008.07.050

M3 - Article

AN - SCOPUS:63649102108

SN - 0925-8388

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EP - 455

JO - Journal of Alloys and Compounds

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