Reach Us +44-1625-708989
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Research Article Open Access

Syntheses and Luminescence Enhancement of Li1+x(Ta1-zNbz)1-xTixO3:RE3+ (RE=Eu, Er, Tm or Dy) Phosphors


We synthesized the phosphors of RE3+-doped Li1+x (Ta1-zNbz)1-xTixO3 (LTNT) with various emission colors by solid-state reaction in air using a conventional electric furnace, where RE=Eu, Er, Tm, or Dy. The optimal host composition with each dopant was determined for the highest photoluminescence (PL) intensity; the relevant chemical formulas were Li1.11Ta0.89Ti0.11O3 (x=0.11 and z=0) with Eu3+, Li1.03 (Ta0.2Nb0.8)0.97Ti0.03O3 (x=0.03 and z=0.8) with Er3+, Li1.08 (Ta0.4Nb0.6)0.92Ti0.08O3 (x=0.08 and z=0.6) with Tm3+, and Li1.14 (Ta0.6Nb0.4)0.86Ti0.14O3 (x=0.14 and z=0.4) with Dy3+. The crystal structures of the phosphors were refined by the XRD-Rietveld method to clarify the relationship between the PL properties and crystal structures. In the LTNT host material, the most effective activator was the Eu3+ ion, with an internal quantum efficiency of 97%. The efficient PL emission is closely related to the coordination environment of Eu3+ in the [Li (Eu) O12] polyhedron of the host LTNT.

Genki Saitoh, Hiromi Nakano, Hiroki Banno, and Koichiro Fukuda

To read the full article Download Full Article | Visit Full Article