Multichannel emissions from 5DJ metastable levels of Eu3+ in miscible-phase phosphors

H. Feng; X. Y. He; E. Y.B. Pun; H. Lin

doi:10.1016/j.jlumin.2021.118285

Multichannel emissions from ⁵D_J metastable levels of Eu³⁺ in miscible-phase phosphors

H. Feng
, X. Y. He^*
, E. Y.B. Pun
, H. Lin^*

^*Corresponding author for this work

Dalian Polytechnic University
City University of Hong Kong

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

2 Scopus citations

Abstract

BaYF₅: Eu³⁺-fluorophosphate (BYF: E-FP) miscible-phase phosphors with tunable white fluorescence and high color-rendering index (CRI) are synthesized by blending Ba(Y_1−xEu_x)F₅ (BYF: E) submicron crystals (SCs) into fluorophosphate glass. Adjusting the concentration of Eu³⁺ purposefully, the comparable intensity of blue, green and red components by multichannel emissions can be regulated to achieve the adjustable white light. The quantum efficiency of ⁵D₀ level in Eu³⁺ reaches up to 90.8%, and the millisecond fluorescence lifetime of blue and green emissions from ⁵D₁, ⁵D₂ and ⁵D₃ levels exhibit the effectiveness of metastable levels. In coordination with blue emission from Sn²⁺, the color coordinates of BYF: E-FP are concentrated in white region of chromaticity diagram and its CRI is able to reach as high as 86. Tunable white fluorescence and high CRI indicate that miscible-phase phosphors possess promising applications in optoelectronic lighting.

Original language	English
Article number	118285
Journal	Journal of Luminescence
Volume	238
DOIs	https://doi.org/10.1016/j.jlumin.2021.118285
State	Published - Oct 2021
Externally published	Yes

Keywords

BaYF: Eu
Fluorophosphate glass
Miscible-phase phosphors

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@article{1ae8d98168db4801a5efebc88c2c3f6e,

title = "Multichannel emissions from 5DJ metastable levels of Eu3+ in miscible-phase phosphors",

abstract = "BaYF5: Eu3+-fluorophosphate (BYF: E-FP) miscible-phase phosphors with tunable white fluorescence and high color-rendering index (CRI) are synthesized by blending Ba(Y1−xEux)F5 (BYF: E) submicron crystals (SCs) into fluorophosphate glass. Adjusting the concentration of Eu3+ purposefully, the comparable intensity of blue, green and red components by multichannel emissions can be regulated to achieve the adjustable white light. The quantum efficiency of 5D0 level in Eu3+ reaches up to 90.8\%, and the millisecond fluorescence lifetime of blue and green emissions from 5D1, 5D2 and 5D3 levels exhibit the effectiveness of metastable levels. In coordination with blue emission from Sn2+, the color coordinates of BYF: E-FP are concentrated in white region of chromaticity diagram and its CRI is able to reach as high as 86. Tunable white fluorescence and high CRI indicate that miscible-phase phosphors possess promising applications in optoelectronic lighting.",

keywords = "BaYF: Eu, Fluorophosphate glass, Miscible-phase phosphors",

author = "H. Feng and He, \{X. Y.\} and Pun, \{E. Y.B.\} and H. Lin",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = oct,

doi = "10.1016/j.jlumin.2021.118285",

language = "英语",

volume = "238",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Multichannel emissions from 5DJ metastable levels of Eu3+ in miscible-phase phosphors

AU - Feng, H.

AU - He, X. Y.

AU - Pun, E. Y.B.

AU - Lin, H.

PY - 2021/10

Y1 - 2021/10

N2 - BaYF5: Eu3+-fluorophosphate (BYF: E-FP) miscible-phase phosphors with tunable white fluorescence and high color-rendering index (CRI) are synthesized by blending Ba(Y1−xEux)F5 (BYF: E) submicron crystals (SCs) into fluorophosphate glass. Adjusting the concentration of Eu3+ purposefully, the comparable intensity of blue, green and red components by multichannel emissions can be regulated to achieve the adjustable white light. The quantum efficiency of 5D0 level in Eu3+ reaches up to 90.8%, and the millisecond fluorescence lifetime of blue and green emissions from 5D1, 5D2 and 5D3 levels exhibit the effectiveness of metastable levels. In coordination with blue emission from Sn2+, the color coordinates of BYF: E-FP are concentrated in white region of chromaticity diagram and its CRI is able to reach as high as 86. Tunable white fluorescence and high CRI indicate that miscible-phase phosphors possess promising applications in optoelectronic lighting.

AB - BaYF5: Eu3+-fluorophosphate (BYF: E-FP) miscible-phase phosphors with tunable white fluorescence and high color-rendering index (CRI) are synthesized by blending Ba(Y1−xEux)F5 (BYF: E) submicron crystals (SCs) into fluorophosphate glass. Adjusting the concentration of Eu3+ purposefully, the comparable intensity of blue, green and red components by multichannel emissions can be regulated to achieve the adjustable white light. The quantum efficiency of 5D0 level in Eu3+ reaches up to 90.8%, and the millisecond fluorescence lifetime of blue and green emissions from 5D1, 5D2 and 5D3 levels exhibit the effectiveness of metastable levels. In coordination with blue emission from Sn2+, the color coordinates of BYF: E-FP are concentrated in white region of chromaticity diagram and its CRI is able to reach as high as 86. Tunable white fluorescence and high CRI indicate that miscible-phase phosphors possess promising applications in optoelectronic lighting.

KW - BaYF: Eu

KW - Fluorophosphate glass

KW - Miscible-phase phosphors

UR - https://www.scopus.com/pages/publications/85108404595

U2 - 10.1016/j.jlumin.2021.118285

DO - 10.1016/j.jlumin.2021.118285

M3 - 文章

AN - SCOPUS:85108404595

SN - 0022-2313

VL - 238

JO - Journal of Luminescence

JF - Journal of Luminescence

M1 - 118285

ER -

Multichannel emissions from ⁵D_J metastable levels of Eu³⁺ in miscible-phase phosphors

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Keywords

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