• 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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    Abstract

    Bright Eu3+-activated double-perovskite Sr2LaTaO6 red-emitting phosphors were successfully synthesized by a high-temperature solid-state method. Under near-ultraviolet excitation at 394 nm, optimal Sr2LaTaO6:0.2Eu3+ phosphors emitted high-brightness red light around 613 nm with the International Commission on Illumination chromaticity coordinates (0.650, 0.349). Notably, the color purity can reach 92%. Impressively, the favorable thermal stability of the Sr2LaTaO6:0.2Eu3+ phosphors was characterized by temperature-dependent emission spectra at different temperatures from 303 to 463 K, and the emission intensity at 423 K remained 73% of its value at 303 K. All of the results suggested that the as-prepared Sr2LaTaO6:0.2Eu3+ phosphors can be used in near-ultraviolet-excitable white light-emitting diodes as a red-emitting color converter.
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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)