Luminescence properties of Ca1−xSrxTiO3:Pr3+

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