Enhanced reddish-orange emission in NaBa4(BO3)3: Sm3+/Ce3+ phosphors for near-ultraviolet and blue LEDs
Source abstract
Abstract
The Ce3+- and Sm3+-co-doped NaBa4(BO3)3 phosphors were synthesized by a traditional high-temperature solid-state reaction method. The morphology of NaBa4(BO3)3 phosphors was characterized by scanning electron microscope. The crystal structures of Ce3+- and/or Sm3+-doped NaBa4(BO3)3 phosphors were studied by X-ray powder diffraction. The results suggested that Ce3+ occupied the two Ba sites, while Sm3+ might enter into the interstices of NaBa4(BO3)3 crystal. The four emission lines of Ce3+ situating at two Ba2+ sites can be well distinguished by Gaussian fitting. The emission lines from Sm3+ in NaBa4(BO3)3 were significantly enhanced by 25-fold when co-doped with 1 mol% Ce3+ ions. New Sm3+ emission center characterized by the intensified excitation band at around 472 nm was produced as a result of Ce3+ co-doping, which significantly extended the excitation wavelength region for matching both the near-ultraviolet and blue-light-emitting diodes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Radiation Detection and Scintillator Technologies · Solid State Laser Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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