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P‐52: Luminescence Properties of Pr‐Doped Perovskite Titanate Phosphors
Author(s) -
Kang SeungYoul,
Byun JungWoo,
Kim Jin Young,
Suh KyungSoo,
Lee Jin Ho,
Cho Kyung Ik,
Kang SeongGu
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831972
Subject(s) - phosphor , luminescence , perovskite (structure) , materials science , titanate , doping , calcium titanate , analytical chemistry (journal) , strontium titanate , mineralogy , chemistry , crystallography , nanotechnology , thin film , optoelectronics , ceramic , metallurgy , organic chemistry , dielectric
We presented luminescence properties of various perovskite titanate phosphors like ATiO 3 :Pr 3+ (A = Ca, Sr, Ba, Ca 1−x Ba x , Sr 1−x Ba x ). Especially, the effect of Ga addition on the luminescence properties was of our interest. Without the Ga addition, the SrTiO 3 :Pr 3+ and BaTiO 3 :Pr 3+ rarely showed red luminance, while the CaTiO 3 :Pr 3+ phosphor had very intense red luminescence at low concentration of Pr. The Ga addition caused the luminescence enhancement for all of the above perovskite titanate phosphors, especially, the SrTiO 3 :Pr 3+ showed the most outstanding enhancement. Also, we investigated the effects of the change of the A‐site in the perovskite phase, ATiO 3 . While the partial replacement of Ca with Ba led the lumincescence to decrease, the partial substitution of Sr with Ba of 20 mole % led the luminescence to increase about 2 times.
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