Novel red phosphors for solid state lighting; the system BixLn1−xVO4; Eu/Sm (Ln=Y, Gd)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Novel red phosphors for solid state lighting; the system Bi_xLn_1−xVO₄; Eu/Sm (Ln=Y, Gd)

Authors:	S Neeraj N Kijima A.K Cheetham

Affiliation:	^a Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA ^b Mitsubishi Chemicals Center for Advanced Materials, University of California, Santa Barbara, CA 93106, USA ^c Inorganic Functional Material Laboratory, MCC-Group Science & Technology Research Center, Mitsubishi Chemical Corporation, 1000, Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan

Abstract:	Solid solutions of vanadates of formula Bi_xLn_1−xVO₄ (Ln=Y, Gd) doped with Eu³⁺ or Sm³⁺ 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 Eu³⁺ 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.

Keywords:	78.55.&minus m 78.55.Hx 83.80.Pc
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