Park, C.-H. Jeon, C.-I. Yu, B.-Y. Choi, H. Bae, H.-S. Kim, C.-H. Pyun, C.-H. 2024-01-21T17:42:00Z 2024-01-21T17:42:00Z 2021-09-02 1998-01 1071-0922 https://pubs.kist.re.kr/handle/201004/143437 The phosphor CaTiO3:Pr3+ 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 1D2 to 3H4. This transition is a forbidden f-f electric dipole transition, but its fluorescence intensity is quite large in CaTiO3:Pr3+ and decreases in Ca1-xSrxTiO3:Pr3+ as x increases. In this study, luminescence properties of CaTiO3:Pr3+ have been investigated in terms of crystal structure, using the Eu3+ ion as a probe. The Pr3+ ion site in the CaTiO3:Pr3+ has no centrosymmetry, and the partial allowance of the 1D2 → 3H4 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 Ca1-xSrxTiO3:Pr3+ prepared by heating at 1150°C, the fraction of the Pr3+ ions at inversion centers increases and the emission intensity decreases as the result. English Society for Information Display Calcium compounds Crystal structure Fluorescence Photoluminescence Calcium strontium titanate Phosphors Luminescence properties of Ca1-xSrxTiO3:Pr3+ Article 10.1889/1.1985210 1 Journal of the Society for Information Display, v.6, no.1, pp.77 - 79 Journal of the Society for Information Display 6 1 77 79 scopus 2-s2.0-0031632387 Article Calcium compounds Crystal structure Fluorescence Photoluminescence Calcium strontium titanate Phosphors Calcium strontium titanate Crystal fields Photoluminescence