Enhanced down-conversion luminescence properties of CaSc2O4: Eu3+ crystals

Abstract CaSc2O4: Eu3+ crystals show intense red (612 nm/614 nm) down-conversion (DC) luminescence. In our paper, the red-shifting of Eu3+-O2- charge transfer (CT) band peaks position from 285 nm to 298 nm was investigated with increasing Ca2+ ion doping concentrations in CaSc2O4: Eu3+ matrix due to the low electronegativity of Ca2+ ion. Meanwhile the intensity ratios of 5D0 → 7F4/5D0 → 7F2 red emissions of Eu3+ ion were increased due to the distorted Cs point symmetry in CaSc2O4 matrix. The luminescence studies indicate that Sc2O3: Eu3+ and CaSc2O4: Eu3+ may serve as a potential red phosphor, where CaSc2O4: Eu3+ shows a better performance than Sc2O3: Eu3+ crystals.

• Publication year

  2019

• Venue

  Journal of Luminescence

• Publication date

  2019-10-01

• Fields of study

  Materials Science, Physics

• Identifiers
  DOI 10.1016/J.JLUMIN.2019.116526
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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