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Materials 2013, 6(7), 2768-2776; doi:10.3390/ma6072768

Synthesis of New RE3+ Doped Li1+xTa1−xTixO3 (RE: Eu, Sm, Er, Tm, and Dy) Phosphors with Various Emission Colors

1
Toyohashi University of Technology, Tempaku, Toyohashi 441-8580, Japan
2
KRI, Inc., Chudoji Minami-machi, Shimogyo-ku, Kyoto 600-8813, Japan
3
Keio University, Yokohama 223-8522, Japan
*
Author to whom correspondence should be addressed.
Received: 19 April 2013 / Revised: 5 May 2013 / Accepted: 8 June 2013 / Published: 11 July 2013
(This article belongs to the Special Issue Luminescent Materials 2013)
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Abstract

New phosphors with various emission colors for RE3+ doped Li1+xTa1−xTixO3 (LTT) (RE: Eu, Sm, Er, Tm, and Dy) were synthesized by electric furnace at 1423 K for 15 h. The microstructure of the host material and the photoluminescence (PL) property were determined and compared to those of RE3+ doped Li1+xNb1−xTixO3 (LNT). In the LTT phosphor, the highest PL intensity was achieved for the mixture composition Li1.11Ta0.89Ti0.11O3 with a LiTaO3 structure, although it has an M-phase superstructure. In the LTT host material, the effective activators were Eu3+ and Sm3+ ions, in contrast to the LNT host material. Here, we discuss the relationship between PL property and the host material’s structure. View Full-Text
Keywords: solid solution; host material; phosphor; structure; photoluminescence solid solution; host material; phosphor; structure; photoluminescence
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Nakano, H.; Suehiro, S.; Furuya, S.; Hayashi, H.; Fujihara, S. Synthesis of New RE3+ Doped Li1+xTa1−xTixO3 (RE: Eu, Sm, Er, Tm, and Dy) Phosphors with Various Emission Colors. Materials 2013, 6, 2768-2776.

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