4.6 Article

High-efficiency and thermally stable far-red-emitting NaLaMgWO6:Mn4+ phosphors for indoor plant growth light-emitting diodes

Journal

OPTICS LETTERS
Volume 43, Issue 14, Pages 3305-3308

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.43.003305

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Funding

  1. National Natural Science Foundation of China (NSFC) [51502190, 51750110511]
  2. State Key Laboratory of Luminescent Materials and Devices
  3. South China University of Technology (SCUT) [2017-skllmd-01]
  4. Science and Technology Projects of Jiangmen [(2017)307, (2017)149]
  5. Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) [YZDY-SSW-JSC018]

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In this Letter, we report a novel NaLaMgWO6:Mn4+ double-perovskite phosphor. Under the excitation at 342 nm, this phosphor showed a high-efficiency far-red emission at approximately 700 nm with internal quantum efficiency of up to 60%. Moreover, it exhibited a high thermal stability; the emission intensity at 423 k was approximately 57% of that at room temperature. Finally, a prototype light-emitting diode (LED) device was fabricated using the combination of a NaLaMgWO6:Mn4+ far-red-emitting phosphor and 365-nm LED chip. (c) 2018 Optical Society of America

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