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- W1551918089 abstract "The phosphor CaTiO 3 :Pr 3+ is highly regarded as a low-voltage red phosphor because of its good color quality and intrinsic conductivity. Under 330-nm excitation it shows red emission, which corresponds to the transition from 1 D 2 to 3 H 4 . This transition is a forbidden f-f electric dipole transition, but its fluorescence intensity is quite large in CaTiO 3 :Pr 3+ and decreases in Ca 1-x Sr x TiO 3 :Pr 3+ as X increases. In this study, luminescence properties of CaTiO 3 :Pr 3+ have been investigated in terms of crystal structure, using the Eu 3+ ion as a probe. The Pr 3+ ion site in the CaTiO 3 :Pr 3+ has no centrosymmetry, and the partial allowance of the 1 D 2 → 3 H 4 transition by the odd crystal-field terms due to the loss of centrosymmetry gives quite strong emission. With the increase of the Sr ion substitution in Ca 1-x Sr x TiO 3 :Pr 3+ prepared by heating at 1150°C, the fraction of the Pr 3+ ions at inversion centers increases and the emission intensity decreases as the result." @default.
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- W1551918089 date "1998-01-01" @default.
- W1551918089 modified "2023-09-24" @default.
- W1551918089 title "Luminescence properties of Ca[sub 1−x]Sr[sub x]TiO[sub 3]:Pr[sup 3+]" @default.
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- W1551918089 doi "https://doi.org/10.1889/1.1985210" @default.
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