Improving monochromaticity of upconversion luminescence by codoping Eu3+ ions in Y2O3:Ho3+, Yb3+ nanocrystals

Y. Q. Sheng; L. L. Xu; J. Liu; D. Zhai; Z. G. Zhang

doi:10.1016/j.jlumin.2009.09.014

Improving monochromaticity of upconversion luminescence by codoping Eu³⁺ ions in Y₂O₃:Ho³⁺, Yb³⁺ nanocrystals

Y. Q. Sheng
, L. L. Xu
, J. Liu
, D. Zhai
, Z. G. Zhang^*

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Harbin Normal University

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

23 Scopus citations

Abstract

Upconversion (UC) luminescence of Y₂O₃:Ho³⁺, Yb³⁺ nanocrystals codoped with different concentrations of Eu³⁺ ions were investigated to improve the monochromaticity of the UC emission. The results show that the monochromaticity, quantified by a parameter SR, increases as the concentration of Eu³⁺ ions becomes higher, which is due to the energy transfer between ⁵I₇ (Ho³⁺) and ⁷F₆ (Eu³⁺). The energy transfer accelerates the relaxation of Ho³⁺ ions from the ⁵I₇ to ⁵I₈ state and then quenches the red emission. The influence of the Eu³⁺ concentration on the pump power dependence of the red UC fluorescence in Y₂O₃:Ho³⁺, Yb³⁺, Eu³⁺ nanocrystals is verified using the steady-state rate equation theory.

Original language	English
Pages (from-to)	338-341
Number of pages	4
Journal	Journal of Luminescence
Volume	130
Issue number	2
DOIs	https://doi.org/10.1016/j.jlumin.2009.09.014
State	Published - Feb 2010

Keywords

Energy transfer
Rare earth
Upconversion luminescence

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10.1016/j.jlumin.2009.09.014

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title = "Improving monochromaticity of upconversion luminescence by codoping Eu3+ ions in Y2O3:Ho3+, Yb3+ nanocrystals",

abstract = "Upconversion (UC) luminescence of Y2O3:Ho3+, Yb3+ nanocrystals codoped with different concentrations of Eu3+ ions were investigated to improve the monochromaticity of the UC emission. The results show that the monochromaticity, quantified by a parameter SR, increases as the concentration of Eu3+ ions becomes higher, which is due to the energy transfer between 5I7 (Ho3+) and 7F6 (Eu3+). The energy transfer accelerates the relaxation of Ho3+ ions from the 5I7 to 5I8 state and then quenches the red emission. The influence of the Eu3+ concentration on the pump power dependence of the red UC fluorescence in Y2O3:Ho3+, Yb3+, Eu3+ nanocrystals is verified using the steady-state rate equation theory.",

keywords = "Energy transfer, Rare earth, Upconversion luminescence",

author = "Sheng, \{Y. Q.\} and Xu, \{L. L.\} and J. Liu and D. Zhai and Zhang, \{Z. G.\}",

year = "2010",

month = feb,

doi = "10.1016/j.jlumin.2009.09.014",

language = "英语",

volume = "130",

pages = "338--341",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Improving monochromaticity of upconversion luminescence by codoping Eu3+ ions in Y2O3:Ho3+, Yb3+ nanocrystals

AU - Sheng, Y. Q.

AU - Xu, L. L.

AU - Liu, J.

AU - Zhai, D.

AU - Zhang, Z. G.

PY - 2010/2

Y1 - 2010/2

N2 - Upconversion (UC) luminescence of Y2O3:Ho3+, Yb3+ nanocrystals codoped with different concentrations of Eu3+ ions were investigated to improve the monochromaticity of the UC emission. The results show that the monochromaticity, quantified by a parameter SR, increases as the concentration of Eu3+ ions becomes higher, which is due to the energy transfer between 5I7 (Ho3+) and 7F6 (Eu3+). The energy transfer accelerates the relaxation of Ho3+ ions from the 5I7 to 5I8 state and then quenches the red emission. The influence of the Eu3+ concentration on the pump power dependence of the red UC fluorescence in Y2O3:Ho3+, Yb3+, Eu3+ nanocrystals is verified using the steady-state rate equation theory.

AB - Upconversion (UC) luminescence of Y2O3:Ho3+, Yb3+ nanocrystals codoped with different concentrations of Eu3+ ions were investigated to improve the monochromaticity of the UC emission. The results show that the monochromaticity, quantified by a parameter SR, increases as the concentration of Eu3+ ions becomes higher, which is due to the energy transfer between 5I7 (Ho3+) and 7F6 (Eu3+). The energy transfer accelerates the relaxation of Ho3+ ions from the 5I7 to 5I8 state and then quenches the red emission. The influence of the Eu3+ concentration on the pump power dependence of the red UC fluorescence in Y2O3:Ho3+, Yb3+, Eu3+ nanocrystals is verified using the steady-state rate equation theory.

KW - Energy transfer

KW - Rare earth

KW - Upconversion luminescence

UR - https://www.scopus.com/pages/publications/71549164611

U2 - 10.1016/j.jlumin.2009.09.014

DO - 10.1016/j.jlumin.2009.09.014

M3 - 文章

AN - SCOPUS:71549164611

SN - 0022-2313

VL - 130

SP - 338

EP - 341

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 2

ER -

Improving monochromaticity of upconversion luminescence by codoping Eu³⁺ ions in Y₂O₃:Ho³⁺, Yb³⁺ nanocrystals

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Keywords

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