• Chinese Optics Letters
  • Vol. 19, Issue 3, 030003 (2021)
Zongjie Zhang, Wei Li, Nan Ma, and Xiaoyong Huang*
Author Affiliations
  • College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
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    PXRD patterns of the SLT:0.2Eu3+ phosphors and SLT host, in the range of (a) 10–80 deg and (b) 30–31 deg.
    Fig. 1. PXRD patterns of the SLT:0.2Eu3+ phosphors and SLT host, in the range of (a) 10–80 deg and (b) 30–31 deg.
    (a) PLE and PL spectra of the SLT:0.2Eu3+ phosphors. (b) PL spectra of the SLT:xEu3+ (x = 0.1, 0.15, 0.2, 0.25, and 0.3) phosphors. (c) The line chart for PL integrated intensity and Eu3+ doping concentration. (d) Decay curves for SLT:xEu3+ phosphors.
    Fig. 2. (a) PLE and PL spectra of the SLT:0.2Eu3+ phosphors. (b) PL spectra of the SLT:xEu3+ (x = 0.1, 0.15, 0.2, 0.25, and 0.3) phosphors. (c) The line chart for PL integrated intensity and Eu3+ doping concentration. (d) Decay curves for SLT:xEu3+ phosphors.
    (a) PL spectra of the as-prepared SLT:0.2Eu3+ phosphors and commercial Y2O2S:Eu3+ red phosphors. (b) Schematic illustration of Eu3+ ions energy level in SLT:Eu3+ phosphors. (c) The asymmetry ratio as a function of Eu3+ doping concentration in SLT:Eu3+ phosphors upon 394 nm excitation. (d) CIE chromaticity diagram for SLT:0.2Eu3+ phosphors (λex = 394 nm). The inset shows the digital photograph of SLT:0.2Eu3+ phosphors under a 365 nm lamp.
    Fig. 3. (a) PL spectra of the as-prepared SLT:0.2Eu3+ phosphors and commercial Y2O2S:Eu3+ red phosphors. (b) Schematic illustration of Eu3+ ions energy level in SLT:Eu3+ phosphors. (c) The asymmetry ratio as a function of Eu3+ doping concentration in SLT:Eu3+ phosphors upon 394 nm excitation. (d) CIE chromaticity diagram for SLT:0.2Eu3+ phosphors (λex = 394 nm). The inset shows the digital photograph of SLT:0.2Eu3+ phosphors under a 365 nm lamp.
    (a) PL spectra of the SLT:0.2Eu3+ phosphors at different temperature from 303 to 463 K. (b) Normalized integrated temperature-dependent PL intensity in wavelength range of 550–750 nm. (c) Fitting plot of ln (I0/I-1) versus 1/kT for SLT:Eu3+ phosphors. (d) Configuration diagram of the ground and excited states for Eu3+ ions in SLT:Eu3+ phosphors.
    Fig. 4. (a) PL spectra of the SLT:0.2Eu3+ phosphors at different temperature from 303 to 463 K. (b) Normalized integrated temperature-dependent PL intensity in wavelength range of 550–750 nm. (c) Fitting plot of ln (I0/I-1) versus 1/kT for SLT:Eu3+ phosphors. (d) Configuration diagram of the ground and excited states for Eu3+ ions in SLT:Eu3+ phosphors.
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    Zongjie Zhang, Wei Li, Nan Ma, Xiaoyong Huang. High-brightness red-emitting double-perovskite phosphor Sr2LaTaO6:Eu3+ with high color purity and thermal stability [Invited][J]. Chinese Optics Letters, 2021, 19(3): 030003
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    Category: Special Issue on Metal Halide Perovskite and Their Applications
    Received: Dec. 16, 2020
    Accepted: Jan. 12, 2021
    Posted: Feb. 8, 2021
    Published Online: Feb. 22, 2021
    The Author Email: Xiaoyong Huang (huangxy04@126.com)