Research on afterglow brightness of Sr4-(x+y+z)Al 14O25: Eux, Dyx, Agzby solid state synthesis

Seung Woo Kim; Jung Sik Kim

doi:10.3365/KJMM.2011.49.4.348

Research on afterglow brightness of Sr_4-(x+y+z)Al ₁₄O₂₅: Eu_x, Dy_x, Ag_zby solid state synthesis

Seung Woo Kim, Jung Sik Kim

Department of Materials Science and Engineering

University of Seoul

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

4 Scopus citations

Abstract

Long-lasting brightness Sr₄Al₁₄O₂₅ : Eu²⁺, Dy³⁺, Ag⁺ phosphor was synthesized by modified solid state reaction and its photoluminescence was investigated. Sr(NO₃)₂ and Al(NO₃)₃ 9H ₂O as starting materials, and B₂O₃ as a flux were mixed with Eu₂O₃ as an activator, Dy ₂O₃ as a coactivator, and AgNO₃ as a charge compensator. The crystalline of target powder showed a single-phase Sr ₄Al₁₄O₂₅ by the XRD characterization and the average particle size was about 20-30 μm from the FE-SEM observation. Ag ⁺ ion doping effects (0-0.06 mol) on Sr₄Al ₁₄O_25:Eu²⁺, Dy³⁺, Ag ⁺phosphor were measured by photoluminescence spectrometer and luminescence meter. The of photoluminescence intensity of the Sr _3.64Al₁₄O₂₅:Eu_0.11, Dy _0.22, Ag_0.03 phosphor was higher than other compositions and afterglow brightness was 0.186 cd/m².

Original language	English
Pages (from-to)	348-354
Number of pages	7
Journal	Journal of Korean Institute of Metals and Materials
Volume	49
Issue number	4
DOIs	https://doi.org/10.3365/KJMM.2011.49.4.348
State	Published - Apr 2011

Keywords

Afterglow brightness
Crystal structure
Energy storage materials
Scanning electron microscopy (sem)
Sintering

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10.3365/KJMM.2011.49.4.348

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title = "Research on afterglow brightness of Sr4-(x+y+z)Al 14O25: Eux, Dyx, Agzby solid state synthesis",

abstract = "Long-lasting brightness Sr4Al14O25 : Eu2+, Dy3+, Ag+ phosphor was synthesized by modified solid state reaction and its photoluminescence was investigated. Sr(NO3)2 and Al(NO3)3 9H 2O as starting materials, and B2O3 as a flux were mixed with Eu2O3 as an activator, Dy 2O3 as a coactivator, and AgNO3 as a charge compensator. The crystalline of target powder showed a single-phase Sr 4Al14O25 by the XRD characterization and the average particle size was about 20-30 μm from the FE-SEM observation. Ag + ion doping effects (0-0.06 mol) on Sr4Al 14O25:Eu2+, Dy3+, Ag +phosphor were measured by photoluminescence spectrometer and luminescence meter. The of photoluminescence intensity of the Sr 3.64Al14O25:Eu0.11, Dy 0.22, Ag0.03 phosphor was higher than other compositions and afterglow brightness was 0.186 cd/m2.",

keywords = "Afterglow brightness, Crystal structure, Energy storage materials, Scanning electron microscopy (sem), Sintering",

author = "Kim, {Seung Woo} and Kim, {Jung Sik}",

year = "2011",

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doi = "10.3365/KJMM.2011.49.4.348",

language = "English",

volume = "49",

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AU - Kim, Seung Woo

AU - Kim, Jung Sik

PY - 2011/4

Y1 - 2011/4

N2 - Long-lasting brightness Sr4Al14O25 : Eu2+, Dy3+, Ag+ phosphor was synthesized by modified solid state reaction and its photoluminescence was investigated. Sr(NO3)2 and Al(NO3)3 9H 2O as starting materials, and B2O3 as a flux were mixed with Eu2O3 as an activator, Dy 2O3 as a coactivator, and AgNO3 as a charge compensator. The crystalline of target powder showed a single-phase Sr 4Al14O25 by the XRD characterization and the average particle size was about 20-30 μm from the FE-SEM observation. Ag + ion doping effects (0-0.06 mol) on Sr4Al 14O25:Eu2+, Dy3+, Ag +phosphor were measured by photoluminescence spectrometer and luminescence meter. The of photoluminescence intensity of the Sr 3.64Al14O25:Eu0.11, Dy 0.22, Ag0.03 phosphor was higher than other compositions and afterglow brightness was 0.186 cd/m2.

AB - Long-lasting brightness Sr4Al14O25 : Eu2+, Dy3+, Ag+ phosphor was synthesized by modified solid state reaction and its photoluminescence was investigated. Sr(NO3)2 and Al(NO3)3 9H 2O as starting materials, and B2O3 as a flux were mixed with Eu2O3 as an activator, Dy 2O3 as a coactivator, and AgNO3 as a charge compensator. The crystalline of target powder showed a single-phase Sr 4Al14O25 by the XRD characterization and the average particle size was about 20-30 μm from the FE-SEM observation. Ag + ion doping effects (0-0.06 mol) on Sr4Al 14O25:Eu2+, Dy3+, Ag +phosphor were measured by photoluminescence spectrometer and luminescence meter. The of photoluminescence intensity of the Sr 3.64Al14O25:Eu0.11, Dy 0.22, Ag0.03 phosphor was higher than other compositions and afterglow brightness was 0.186 cd/m2.

KW - Afterglow brightness

KW - Crystal structure

KW - Energy storage materials

KW - Scanning electron microscopy (sem)

KW - Sintering

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JO - Journal of Korean Institute of Metals and Materials

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Research on afterglow brightness of Sr_4-(x+y+z)Al ₁₄O₂₅: Eu_x, Dy_x, Ag_zby solid state synthesis

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Keywords

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