Improved luminescence properties of Na2TiSiO5 phosphor by the Ge4+ doping in the crystal lattice

Young Ji Park; Sun Woog Kim; Kazuma Sugimoto; Takuya Hasegawa; Koudai Tanima; Kazuyoshi Uematsu; Kenji Toda; Mineo Sato

doi:10.36410/jcpr.2019.20.5.460

Improved luminescence properties of Na₂TiSiO₅ phosphor by the Ge⁴⁺ doping in the crystal lattice

Young Ji Park, Sun Woog Kim, Kazuma Sugimoto, Takuya Hasegawa, Koudai Tanima, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato

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

1 Citation (Scopus)

Abstract

Rare earth free white emitting Na₂TiSi₁-_xGe_xO₅ phosphors were synthesized by a conventional solid-state reaction method, and the photoluminescence properties were characterized. The phosphors obtained in the present study showed broad bluish-white emission with a peak at 485 nm due to the charge transfer transition between O^2- and Ti⁴⁺ and the emission peak intensity was effectively enhanced by the Ge⁴⁺ doping in the Na₂TiSiO₅ crystal lattice. The emission peak intensity of Na₂TiSi_0.5Ge_0.5O₅ was 1.35 times higher than that of Na₂TiSiO₅ and the CIE chromaticity coordinate values for the phosphor were x = 0.29 and y = 0.38.

Original language	English
Pages (from-to)	460-463
Number of pages	4
Journal	Journal of Ceramic Processing Research
Volume	20
Issue number	5
DOIs	https://doi.org/10.36410/jcpr.2019.20.5.460
Publication status	Published - 2019 Oct
Externally published	Yes

Keywords

NaTisiO
Rare earth free
White emission phosphor

ASJC Scopus subject areas

Ceramics and Composites

Access to Document

10.36410/jcpr.2019.20.5.460

Cite this

@article{09e54cae84744395808f027d143e57c8,

title = "Improved luminescence properties of Na2TiSiO5 phosphor by the Ge4+ doping in the crystal lattice",

abstract = "Rare earth free white emitting Na2TiSi1-xGexO5 phosphors were synthesized by a conventional solid-state reaction method, and the photoluminescence properties were characterized. The phosphors obtained in the present study showed broad bluish-white emission with a peak at 485 nm due to the charge transfer transition between O2- and Ti4+ and the emission peak intensity was effectively enhanced by the Ge4+ doping in the Na2TiSiO5 crystal lattice. The emission peak intensity of Na2TiSi0.5Ge0.5O5 was 1.35 times higher than that of Na2TiSiO5 and the CIE chromaticity coordinate values for the phosphor were x = 0.29 and y = 0.38.",

keywords = "NaTisiO, Rare earth free, White emission phosphor",

author = "Park, {Young Ji} and Kim, {Sun Woog} and Kazuma Sugimoto and Takuya Hasegawa and Koudai Tanima and Kazuyoshi Uematsu and Kenji Toda and Mineo Sato",

note = "Funding Information: This work was supported by a project from NEDO, New Energy and Industrial Technology Development Organization (Rare Metal Substitute Materials Development Project Development of Technology for Reducing Tb and Eu Usage in Phosphors for Fluorescent Lamp by High-speed Material Synthesis and Evaluation). Publisher Copyright: {\textcopyright} 2019, Hanyang University. All rights reserved.",

year = "2019",

month = oct,

doi = "10.36410/jcpr.2019.20.5.460",

language = "English",

volume = "20",

pages = "460--463",

journal = "Journal of Ceramic Processing Research",

issn = "1229-9162",

publisher = "Hanyang University",

number = "5",

}

TY - JOUR

T1 - Improved luminescence properties of Na2TiSiO5 phosphor by the Ge4+ doping in the crystal lattice

AU - Park, Young Ji

AU - Kim, Sun Woog

AU - Sugimoto, Kazuma

AU - Hasegawa, Takuya

AU - Tanima, Koudai

AU - Uematsu, Kazuyoshi

AU - Toda, Kenji

AU - Sato, Mineo

N1 - Funding Information: This work was supported by a project from NEDO, New Energy and Industrial Technology Development Organization (Rare Metal Substitute Materials Development Project Development of Technology for Reducing Tb and Eu Usage in Phosphors for Fluorescent Lamp by High-speed Material Synthesis and Evaluation). Publisher Copyright: © 2019, Hanyang University. All rights reserved.

PY - 2019/10

Y1 - 2019/10

N2 - Rare earth free white emitting Na2TiSi1-xGexO5 phosphors were synthesized by a conventional solid-state reaction method, and the photoluminescence properties were characterized. The phosphors obtained in the present study showed broad bluish-white emission with a peak at 485 nm due to the charge transfer transition between O2- and Ti4+ and the emission peak intensity was effectively enhanced by the Ge4+ doping in the Na2TiSiO5 crystal lattice. The emission peak intensity of Na2TiSi0.5Ge0.5O5 was 1.35 times higher than that of Na2TiSiO5 and the CIE chromaticity coordinate values for the phosphor were x = 0.29 and y = 0.38.

AB - Rare earth free white emitting Na2TiSi1-xGexO5 phosphors were synthesized by a conventional solid-state reaction method, and the photoluminescence properties were characterized. The phosphors obtained in the present study showed broad bluish-white emission with a peak at 485 nm due to the charge transfer transition between O2- and Ti4+ and the emission peak intensity was effectively enhanced by the Ge4+ doping in the Na2TiSiO5 crystal lattice. The emission peak intensity of Na2TiSi0.5Ge0.5O5 was 1.35 times higher than that of Na2TiSiO5 and the CIE chromaticity coordinate values for the phosphor were x = 0.29 and y = 0.38.

KW - NaTisiO

KW - Rare earth free

KW - White emission phosphor

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SN - 1229-9162

VL - 20

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EP - 463

JO - Journal of Ceramic Processing Research

JF - Journal of Ceramic Processing Research

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