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Efficient broadband near-infrared phosphor SrScSbO:Cr for solar-like lighting

Science China Materials, ISSN: 2199-4501, Vol: 65, Issue: 3, Page: 748-756
2022
  • 110
    Citations
  • 0
    Usage
  • 23
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    110
    • Citation Indexes
      110
  • Captures
    23

Article Description

for healthy lighting, daily lighting that considers both visible light and near-infrared (NIR) light is necessary. However, at ∼900 nm, the extensively used solar-like phosphor-converted light-emitting diodes (pc-LEDs) are limited by a lack of high-performance NIR luminescent materials. We report a broadband NIR phosphor SrScSbO:Cr with a double perovskite-type structure, thus simultaneously demonstrating high luminescence efficiency and good thermal stability. Under 550-nm excitation, SrScSbO:Cr demonstrates broadband NIR emission centered at ∼890nm with luminescence internal/external efficiencies of 82.0%/35.7%, respectively. Furthermore, the luminescence integrated intensity at 430 K remains at ∼66.4% of the initial intensity. We successfully fabricated pc-LED devices using a 465-nm-sized blue chip and other commercial phosphors, presenting a relatively complete solar-like spectrum from blue to NIR light and is expected to be used in solar-like lighting.[Figure not available: see fulltext.]

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