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Chinese Optics Letters, Volume. 15, Issue 12, 121602(2017)

Synthesis and photoluminescence properties of Sr4La(PO4)3O:RE3+(RE=Eu/Tb/Ce) phosphors

Ju Cheng1,2, Jia Zhang2, Hongchao Zhang1, Sardar Maryam1, Xintian Bian2, Zhonghua Shen1, Xiaowu Ni1, and Jian Lu1、*
Author Affiliations
  • 1School of Science, Nanjing University of Science and Technology, Nanjing 210094, China
  • 2School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huai’an 223001, China
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    XRD patterns of (a) SLPO:xEu3+ (x = 0–0.17), (b) SLPO:xTb3+ (x = 0–0.17), and (c) SLPO:xCe3+ (x = 0–0.17).

    Fig. 1. XRD patterns of (a) SLPO:xEu3+ (x = 0–0.17), (b) SLPO:xTb3+ (x = 0–0.17), and (c) SLPO:xCe3+ (x = 0–0.17).

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    (Color online) PLE (λem= 611 nm) and emission (PL, λex= 394 nm) spectra of SLPO:0.05Eu3+ phosphor.

    Fig. 2. (Color online) PLE (λem= 611 nm) and emission (PL, λex= 394 nm) spectra of SLPO:0.05Eu3+ phosphor.

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    (Color online) (a) Emission spectra of SLPO:xEu3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature; (b) the relationships of log(xEu3+) versus log(I/xEu3+); inset: PL intensity of SLPO:xEu3+ as a function of Eu3+ concentration.

    Fig. 3. (Color online) (a) Emission spectra of SLPO:xEu3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature; (b) the relationships of log(xEu3+) versus log(I/xEu3+); inset: PL intensity of SLPO:xEu3+ as a function of Eu3+ concentration.

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    (Color online) PLE (λem= 539 nm) and emission (PL, λex= 379 nm) spectra of SLPO:0.07Tb3+ phosphor.

    Fig. 4. (Color online) PLE (λem= 539  nm) and emission (PL, λex= 379  nm) spectra of SLPO:0.07Tb3+ phosphor.

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    (Color online) (a) Emission spectra of SLPO:xTb3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature; (b) the relationships of log(xTb3+) versus log(I/xTb3+), inset: PL intensity of SLPO:xTb3+ as a function of Tb3+ concentration.

    Fig. 5. (Color online) (a) Emission spectra of SLPO:xTb3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature; (b) the relationships of log(xTb3+) versus log(I/xTb3+), inset: PL intensity of SLPO:xTb3+ as a function of Tb3+ concentration.

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    (Color online) (a) PLE (λem= 482 nm) and PL (λex= 337 nm) spectra of SLPO:0.12Ce3+ phosphor; (b) the PL (λex= 337 nm) spectra of SLPO:xCe3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature. Inset (up left): Cell volumes of SLPO: xCe3+ (0.01 ≤ x ≤ 0.17) as function of Ce3+ concentration. Inset (up right): the relationship between the emission peak with the intensity and the Ce3+ concentration in SLPO:xCe3+.

    Fig. 6. (Color online) (a) PLE (λem= 482  nm) and PL (λex= 337  nm) spectra of SLPO:0.12Ce3+ phosphor; (b) the PL (λex= 337  nm) spectra of SLPO:xCe3+ (x = 0.01, 0.05, 0.07, 0.12, and 0.17) at room temperature. Inset (up left): Cell volumes of SLPO: xCe3+ (0.01 ≤ x ≤ 0.17) as function of Ce3+ concentration. Inset (up right): the relationship between the emission peak with the intensity and the Ce3+ concentration in SLPO:xCe3+.

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    (Color online) Normalized (a) PL and (b) PLE spectra of SLPO: 0.01Ce3+ excited and monitored at different wavelengths.

    Fig. 7. (Color online) Normalized (a) PL and (b) PLE spectra of SLPO: 0.01Ce3+ excited and monitored at different wavelengths.

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    (Color online) PL spectra of (a) SLPO:0.05Eu3+ (λex= 394 nm) and (b) SLPO:0.07Tb3+ (λex= 379 nm) at different temperatures, inset: the temperature dependence of the integrated emission intensity; (c) the PL spectra of SLPO:0.12Ce3+ at different temperatures (λex= 337 nm); (d) the activation plot for thermal quenching of SLPO:0.12Ce3+, inset: temperature dependence of the integrated emission intensity.

    Fig. 8. (Color online) PL spectra of (a) SLPO:0.05Eu3+ (λex= 394  nm) and (b) SLPO:0.07Tb3+ (λex= 379  nm) at different temperatures, inset: the temperature dependence of the integrated emission intensity; (c) the PL spectra of SLPO:0.12Ce3+ at different temperatures (λex= 337  nm); (d) the activation plot for thermal quenching of SLPO:0.12Ce3+, inset: temperature dependence of the integrated emission intensity.

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    SEM images of (a) SLPO:0.05 Eu3+; (b) SLPO:0.07Tb3+ and (c) SLPO:0.12Ce3+ phosphors.

    Fig. 9. SEM images of (a) SLPO:0.05 Eu3+; (b) SLPO:0.07Tb3+ and (c) SLPO:0.12Ce3+ phosphors.

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    CIE chromaticity diagram for SLPO:0.05Eu3+ (Point 1), SLPO:0.07Tb3+ (Point 2) and SLPO:0.12Ce3+ excited under different wavelengths (Points 3–7); insets: the corresponding digital photographs of (a) SLPO:0.05Eu3+ and (b) SLPO:0.07Tb3+ under 254 nm ultraviolet lamp irradiation; and (c) SLPO:0.12Ce3+ under 365 nm ultraviolet lamp irradiation.

    Fig. 10. CIE chromaticity diagram for SLPO:0.05Eu3+ (Point 1), SLPO:0.07Tb3+ (Point 2) and SLPO:0.12Ce3+ excited under different wavelengths (Points 3–7); insets: the corresponding digital photographs of (a) SLPO:0.05Eu3+ and (b) SLPO:0.07Tb3+ under 254 nm ultraviolet lamp irradiation; and (c) SLPO:0.12Ce3+ under 365 nm ultraviolet lamp irradiation.

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    • Table 1. CIE Coordinates, Peak Emission Wavelength of PL Spectra for Eu3+, Tb3+, and Ce3+-Doped SLPO Samples

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      Table 1. CIE Coordinates, Peak Emission Wavelength of PL Spectra for Eu3+, Tb3+, and Ce3+-Doped SLPO Samples

      Sampleλex/nmλem-peak/nmCIE (x,y)
      SLPO:0.05Eu3+394611(0.6405, 0.3591)
      SLPO:0.07Tb3+379539(0.3381, 0.4445)
      SLPO:0.12Ce3+312469(0.2316, 0.2769)
      SLPO:0.12Ce3+337482(0.2328, 0.3014)
      SLPO:0.12Ce3+352498(0.259, 0.3663)
      SLPO:0.12Ce3+362505(0.2733, 0.3951)
      SLPO:0.12Ce3+372540(0.2925, 0.4004)
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    Ju Cheng, Jia Zhang, Hongchao Zhang, Sardar Maryam, Xintian Bian, Zhonghua Shen, Xiaowu Ni, Jian Lu, "Synthesis and photoluminescence properties of Sr4La(PO4)3O:RE3+(RE=Eu/Tb/Ce) phosphors," Chin. Opt. Lett. 15, 121602 (2017)

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    Paper Information

    Category: Materials

    Received: Aug. 27, 2017

    Accepted: Nov. 1, 2017

    Published Online: Jul. 18, 2018

    The Author Email: Jian Lu (lj6805@163.com)

    DOI:10.3788/COL201715.121602

    Topics

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