Enhanced green upconversion luminescence properties of Er3+/Yb3+ co-doped strontium gadolinium silicate oxyapatite phosphor

G. Seeta Rama Raju; E. Pavitra; L. Krishna Bharat; Gattupalli Manikya Rao; Tae Joon Jeon; Yun Suk Huh; Young Kyu Han

doi:10.1016/j.ceramint.2018.04.231

Enhanced green upconversion luminescence properties of Er³⁺/Yb³⁺ co-doped strontium gadolinium silicate oxyapatite phosphor

G. Seeta Rama Raju, E. Pavitra, L. Krishna Bharat, Gattupalli Manikya Rao, Tae Joon Jeon, Yun Suk Huh, Young Kyu Han

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

12 Scopus citations

Abstract

Upconversion Sr₂(Gd_.98-xEr_.02Yb_x)₈Si₆O₂₆ (SGSO:2Er³⁺/xYb³⁺) phosphor materials were synthesized using a citrate sol-gel process. X-ray diffraction patterns confirmed their hexagonal structure. Field emission scanning electron microscopy images of SGSO:2Er³⁺/xYb³⁺ phosphors depicted submicron particles. The enhanced upconversion luminescence properties of SGSO:2Er³⁺/xYb³⁺ phosphors were analysed as a function of Yb³⁺ ion concentration and laser power. The energy transfer induced enhanced emission of the Er³⁺/ Yb³⁺ ions co-doped SGSO phosphors was ascribed to multi-phonon relaxation. The calculated chromaticity coordinates of the SGSO:2Er³⁺/xYb³⁺ phosphors showed emissions could be tuned by changing Yb³⁺ ion concentration. Optimized sample exhibited the chromaticity coordinate values near to the ultra-high definition television standard green emission coordinates.

Original language	English
Pages (from-to)	13852-13857
Number of pages	6
Journal	Ceramics International
Volume	44
Issue number	12
DOIs	https://doi.org/10.1016/j.ceramint.2018.04.231
State	Published - 15 Aug 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.

Keywords

Energy transfer
Green emission
Sol-gel process
Submicron particle
Upconversion luminescence

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10.1016/j.ceramint.2018.04.231

Cite this

@article{0efeac9f34504d069d6d526c7d4a2201,

title = "Enhanced green upconversion luminescence properties of Er3+/Yb3+ co-doped strontium gadolinium silicate oxyapatite phosphor",

abstract = "Upconversion Sr2(Gd.98-xEr.02Ybx)8Si6O26 (SGSO:2Er3+/xYb3+) phosphor materials were synthesized using a citrate sol-gel process. X-ray diffraction patterns confirmed their hexagonal structure. Field emission scanning electron microscopy images of SGSO:2Er3+/xYb3+ phosphors depicted submicron particles. The enhanced upconversion luminescence properties of SGSO:2Er3+/xYb3+ phosphors were analysed as a function of Yb3+ ion concentration and laser power. The energy transfer induced enhanced emission of the Er3+/ Yb3+ ions co-doped SGSO phosphors was ascribed to multi-phonon relaxation. The calculated chromaticity coordinates of the SGSO:2Er3+/xYb3+ phosphors showed emissions could be tuned by changing Yb3+ ion concentration. Optimized sample exhibited the chromaticity coordinate values near to the ultra-high definition television standard green emission coordinates.",

keywords = "Energy transfer, Green emission, Sol-gel process, Submicron particle, Upconversion luminescence",

author = "Raju, {G. Seeta Rama} and E. Pavitra and Bharat, {L. Krishna} and Rao, {Gattupalli Manikya} and Jeon, {Tae Joon} and Huh, {Yun Suk} and Han, {Young Kyu}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

month = aug,

day = "15",

doi = "10.1016/j.ceramint.2018.04.231",

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T1 - Enhanced green upconversion luminescence properties of Er3+/Yb3+ co-doped strontium gadolinium silicate oxyapatite phosphor

AU - Raju, G. Seeta Rama

AU - Pavitra, E.

AU - Bharat, L. Krishna

AU - Rao, Gattupalli Manikya

AU - Jeon, Tae Joon

AU - Huh, Yun Suk

AU - Han, Young Kyu

PY - 2018/8/15

Y1 - 2018/8/15

N2 - Upconversion Sr2(Gd.98-xEr.02Ybx)8Si6O26 (SGSO:2Er3+/xYb3+) phosphor materials were synthesized using a citrate sol-gel process. X-ray diffraction patterns confirmed their hexagonal structure. Field emission scanning electron microscopy images of SGSO:2Er3+/xYb3+ phosphors depicted submicron particles. The enhanced upconversion luminescence properties of SGSO:2Er3+/xYb3+ phosphors were analysed as a function of Yb3+ ion concentration and laser power. The energy transfer induced enhanced emission of the Er3+/ Yb3+ ions co-doped SGSO phosphors was ascribed to multi-phonon relaxation. The calculated chromaticity coordinates of the SGSO:2Er3+/xYb3+ phosphors showed emissions could be tuned by changing Yb3+ ion concentration. Optimized sample exhibited the chromaticity coordinate values near to the ultra-high definition television standard green emission coordinates.

AB - Upconversion Sr2(Gd.98-xEr.02Ybx)8Si6O26 (SGSO:2Er3+/xYb3+) phosphor materials were synthesized using a citrate sol-gel process. X-ray diffraction patterns confirmed their hexagonal structure. Field emission scanning electron microscopy images of SGSO:2Er3+/xYb3+ phosphors depicted submicron particles. The enhanced upconversion luminescence properties of SGSO:2Er3+/xYb3+ phosphors were analysed as a function of Yb3+ ion concentration and laser power. The energy transfer induced enhanced emission of the Er3+/ Yb3+ ions co-doped SGSO phosphors was ascribed to multi-phonon relaxation. The calculated chromaticity coordinates of the SGSO:2Er3+/xYb3+ phosphors showed emissions could be tuned by changing Yb3+ ion concentration. Optimized sample exhibited the chromaticity coordinate values near to the ultra-high definition television standard green emission coordinates.

KW - Energy transfer

KW - Green emission

KW - Sol-gel process

KW - Submicron particle

KW - Upconversion luminescence

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