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Journal of Inorganic Materials, Volume. 40, Issue 3, 314(2025)

Stability of Phosphors for White LED Excitable by Violet Light

Zesheng PAN1,2, Yaping YOU1,2, Ya ZHENG1,2, Haijie CHEN1,2、*, Lianjun WANG1,2、*, and Wan JIANG1,2
Author Affiliations
  • 11. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
  • 22. Institute of Functional Materials, Donghua University, Shanghai 201620, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (15)
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    References (44)
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    Figures & Tables(15)
    Environmental stability of K2CaPO4F:Eu2+ phosphor
    1. Environmental stability of K2CaPO4F:Eu2+ phosphor

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    SEM images of K2CaPO4F:Eu2+ phosphor when kept in 85 ℃/85% RH condition for different duration time
    2. SEM images of K2CaPO4F:Eu2+ phosphor when kept in 85 ℃/85% RH condition for different duration time

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    Environmental stability of K1.3Al11O17+δ:Eu2+ phosphor
    3. Environmental stability of K1.3Al11O17+δ:Eu2+ phosphor

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    Environmental stability of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor
    4. Environmental stability of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor

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    Environmental stability of white LED
    5. Environmental stability of white LED

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    Optical performance of K2CaPO4F:Eu2+ phosphor
    S1. Optical performance of K2CaPO4F:Eu2+ phosphor

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    Optical performance of K1.3Al11O17+δ:Eu2+ phosphor
    S2. Optical performance of K1.3Al11O17+δ:Eu2+ phosphor

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    SEM images of K1.3Al11O17+δ:Eu2+ phosphor before (a) and after (b) soaking in water for 14 d
    S3. SEM images of K1.3Al11O17+δ:Eu2+ phosphor before (a) and after (b) soaking in water for 14 d

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    Thermoluminescence spectrum of K1.3Al11O17+δ:Eu2+ phosphor
    S4. Thermoluminescence spectrum of K1.3Al11O17+δ:Eu2+ phosphor

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    Optical performance of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor
    S5. Optical performance of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor

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    SEM images of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor before (a) and after (b) soaking in water for 14 d
    S6. SEM images of Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor before (a) and after (b) soaking in water for 14 d

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    Dependence of ln[(I0/IT)-1] on 1/kT for Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor
    S7. Dependence of ln[(I0/IT)-1] on 1/kT for Ca2YHf2Al3O12:Ce3+,Tb3+ phosphor

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    CIE chromaticity diagram of white LED device
    S8. CIE chromaticity diagram of white LED device

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    Environmental stability data of white LED
    S9. Environmental stability data of white LED

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    • Table 1. Comparison of phosphors in optical performance and environmental stability

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      Table 1. Comparison of phosphors in optical performance and environmental stability

      ComponentPLQYThermal stability (150 ℃) High temperature and high humidity stability(85 ℃/85% RH) Water resistance Light irradiation stability (200 mW·cm-2) Ref.
      K2Ca(PO4)F:Eu2+75% (407 nm)85%---[20]
      K2Ca(PO4)F:Eu2+94.5% (390 nm)82%---[S1]
      Rb0.5K1.5Ca(PO4)F:Eu2+87% (395 nm)85.5%---[S2]
      Na2Ca0.995PO4F:Eu2+84% (400 nm)~70%---[S3]
      K2Ca(PO4)F:Eu2+95.33% (380 nm)82.2%34.7%, 14 d-87.9%, 14 dThis Work
      K1.6Al11O17+δ:Eu2+92% (400 nm)>100%---[21]
      K0.84Sr0.06Al11O17+δ:Eu2+92.4% (360 nm)>100%---[44]
      K0.6Ba0.1Eu0.1Al11O17:Eu2+91.2% (345 nm)~100%---[S4]
      K1.3Al11O17+δ:Eu2+74.29% (400 nm)81.8%92.2%, 14 d~100%,14 d57.6%, 14 dThis Work
      Ca2YHf2Al3O12:Ce3+,Tb3+78.5% (408 nm)43.3%---[22]
      Ca2YHf2Al3O12:Ce3+68.5% (400 nm)76.6%---[S5]
      Ca2GdHf2Al3O12:Ce3+,Tb3+82.7% (408 nm)48%---[S6]
      Ca2YHf2Al3O12:Ce3+,Tb3+95.72% (410 nm)59.8%84.6%, 14 d~100%,14 d95.5%, 14 dThis Work
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    Zesheng PAN, Yaping YOU, Ya ZHENG, Haijie CHEN, Lianjun WANG, Wan JIANG. Stability of Phosphors for White LED Excitable by Violet Light[J]. Journal of Inorganic Materials, 2025, 40(3): 314

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    Paper Information

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    Received: Aug. 30, 2024

    Accepted: --

    Published Online: Apr. 24, 2025

    The Author Email: Haijie CHEN (haijie.chen@dhu.edu.cn), Lianjun WANG (wanglj@dhu.edu.cn)

    DOI:10.15541/jim20240396

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology