Up-Conversion White Emission of β-NaYbF4:0.1%Tm3+,0.1%Er3+ under 980 nm Excitation

Tao Pang; Jing Jing Chen; Yun Xia Lin; Yu Ting Shen; Min Er Zhao; Ju Guan Gu

doi:10.4028/www.scientific.net/MSF.809-810.697

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Up-Conversion White Emission of β-NaYbF₄:0.1%Tm³⁺,0.1%Er³⁺ under 980 nm Excitation

Abstract:

Rare-earth doped β-NaYbF₄ upconversion phosphors were synthesized using a simple hydrothermal procedure. It is found that under 980 nm excitation β-NaYbF₄:0.1%Tm are more efficient than β-NaYF₄:20%Yb,0.1% that is known as one of the most effective upconversion materials. The unusual result may be related to the particles size. After introducing 0.1%Er³⁺ into the NaYbF₄:0.1%Tm lattice, the upconversion white emission with color coordinate of (0.3016,0.3748) is obtained. The investigation of achieving mechanism indicates that besides the energy transfer from Yb³⁺ to Tm³⁺ and Er³⁺, respectively, there exists a new energy transfer process: ³F_2,3 (Tm³⁺) + ⁴I_11/2 (Er³⁺) → ³F₄ (Tm³⁺) + ²H_11/2/⁴S_3/2(Er³⁺).

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2014 China Functional Materials Technology and Industry Forum

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Materials Science Forum (Volumes 809-810)

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697-701

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.809-810.697

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December 2014

Authors:

Tao Pang*, Jing Jing Chen, Yun Xia Lin, Yu Ting Shen, Min Er Zhao, Ju Guan Gu

Keywords:

Hydrothermal Synthesis, Rare Earth, Upconversion, White Emission

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