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

Materials

Hiromi Nakano²  Shiho Suehiro²  Shohei Furuya²  Hiroyuki Hayashi¹ 

[1] KRI, Inc., Chudoji Minami-machi, Shimogyo-ku, Kyoto 600-8813, Japan; E-Mail:;Toyohashi University of Technology, Tempaku, Toyohashi 441-8580, Japan; E-Mails:

关键词: solid solution;    host material;    phosphor;    structure;    photoluminescence;   

DOI  :  10.3390/ma6072768

来源: mdpi

【 摘 要 】

New phosphors with various emission colors for RE³⁺ doped Li_1+xTa_1−xTi_xO₃ (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 Li_1+xNb_1−xTi_xO₃ (LNT)_. In the LTT phosphor, the highest PL intensity was achieved for the mixture composition Li_1.11Ta_0.89Ti_0.11O₃ 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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.