Abstract
Solid solutions of vanadates of formula Bi x Ln 1− x VO 4 (Ln=Y, Gd) doped with Eu 3+ or Sm 3+ ions have been synthesized by solid-state reactions. Intense red/orange-red luminescence is obtained in these samples on excitation in the broad charge-transfer band in the near UV. The excitation in the Eu 3+ levels leads to much less intense red emission. These materials could find applications as red phosphors for solid-state white lighting devices utilizing GaN-based excitation in the near UV.
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