Enhanced visible and mid-IR emissions in Er/Yb-codoped K0.5Na0.5NbO3ferroelectric ceramics

Xiao Wu; Tat Hang Chung; Kin Wing Kwok

doi:10.1016/j.ceramint.2015.07.018

Enhanced visible and mid-IR emissions in Er/Yb-codoped K_0.5Na_0.5NbO₃ferroelectric ceramics

Xiao Wu, Tat Hang Chung, Kin Wing Kwok

Research output: Journal article publication › Journal article › Academic research › peer-review

22 Citations (Scopus)

Abstract

Er3+/Yb3+-codoped K0.5Na0.5NbO3(KNN) ceramics have been fabricated by the solid state reaction method. Under the excitation of 980 nm, Er3+ions exhibit visible up-conversion emissions as well as the near-infrared (NIR) and middle-infrared (MIR) emissions. Yb3+ions are used as the sensitizer to codope with Er3+in the KNN host in the purpose of improving the emission efficiency and PL intensities, i.e. significantly enhancing the blue, green, red and MIR emissions of Er3+. The concentration quenching effect has been discussed together with the up-conversion emissions and corresponding luminescent lifetimes. The energy transfer processes between Er3+and Yb3+have been investigated with the relationship between the Yb3+concentration and PL intensities. Due to the moderate ferroelectric and piezoelectric properties of the host, the ceramics show multifunctional performance and potential in the application of optoelectronic areas.

Original language	English
Pages (from-to)	14041-14048
Number of pages	8
Journal	Ceramics International
Volume	41
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2015.07.018
Publication status	Published - 29 May 2015

Keywords

Er-doped KNN ceramics
Ferroelectrics
Mid-IR emission
Up-conversion photoluminescence

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

More information

10.1016/j.ceramint.2015.07.018

Cite this

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title = "Enhanced visible and mid-IR emissions in Er/Yb-codoped K0.5Na0.5NbO3ferroelectric ceramics",

abstract = "Er3+/Yb3+-codoped K0.5Na0.5NbO3(KNN) ceramics have been fabricated by the solid state reaction method. Under the excitation of 980 nm, Er3+ions exhibit visible up-conversion emissions as well as the near-infrared (NIR) and middle-infrared (MIR) emissions. Yb3+ions are used as the sensitizer to codope with Er3+in the KNN host in the purpose of improving the emission efficiency and PL intensities, i.e. significantly enhancing the blue, green, red and MIR emissions of Er3+. The concentration quenching effect has been discussed together with the up-conversion emissions and corresponding luminescent lifetimes. The energy transfer processes between Er3+and Yb3+have been investigated with the relationship between the Yb3+concentration and PL intensities. Due to the moderate ferroelectric and piezoelectric properties of the host, the ceramics show multifunctional performance and potential in the application of optoelectronic areas.",

keywords = "Er-doped KNN ceramics, Ferroelectrics, Mid-IR emission, Up-conversion photoluminescence",

author = "Xiao Wu and Chung, {Tat Hang} and Kwok, {Kin Wing}",

year = "2015",

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TY - JOUR

T1 - Enhanced visible and mid-IR emissions in Er/Yb-codoped K0.5Na0.5NbO3ferroelectric ceramics

AU - Wu, Xiao

AU - Chung, Tat Hang

AU - Kwok, Kin Wing

PY - 2015/5/29

Y1 - 2015/5/29

N2 - Er3+/Yb3+-codoped K0.5Na0.5NbO3(KNN) ceramics have been fabricated by the solid state reaction method. Under the excitation of 980 nm, Er3+ions exhibit visible up-conversion emissions as well as the near-infrared (NIR) and middle-infrared (MIR) emissions. Yb3+ions are used as the sensitizer to codope with Er3+in the KNN host in the purpose of improving the emission efficiency and PL intensities, i.e. significantly enhancing the blue, green, red and MIR emissions of Er3+. The concentration quenching effect has been discussed together with the up-conversion emissions and corresponding luminescent lifetimes. The energy transfer processes between Er3+and Yb3+have been investigated with the relationship between the Yb3+concentration and PL intensities. Due to the moderate ferroelectric and piezoelectric properties of the host, the ceramics show multifunctional performance and potential in the application of optoelectronic areas.

AB - Er3+/Yb3+-codoped K0.5Na0.5NbO3(KNN) ceramics have been fabricated by the solid state reaction method. Under the excitation of 980 nm, Er3+ions exhibit visible up-conversion emissions as well as the near-infrared (NIR) and middle-infrared (MIR) emissions. Yb3+ions are used as the sensitizer to codope with Er3+in the KNN host in the purpose of improving the emission efficiency and PL intensities, i.e. significantly enhancing the blue, green, red and MIR emissions of Er3+. The concentration quenching effect has been discussed together with the up-conversion emissions and corresponding luminescent lifetimes. The energy transfer processes between Er3+and Yb3+have been investigated with the relationship between the Yb3+concentration and PL intensities. Due to the moderate ferroelectric and piezoelectric properties of the host, the ceramics show multifunctional performance and potential in the application of optoelectronic areas.

KW - Er-doped KNN ceramics

KW - Ferroelectrics

KW - Mid-IR emission

KW - Up-conversion photoluminescence

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DO - 10.1016/j.ceramint.2015.07.018

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SN - 0272-8842

VL - 41

SP - 14041

EP - 14048

JO - Ceramics International

JF - Ceramics International

IS - 10

ER -