Site substitution and energy transfer of Eu2+ and Ce3+ in KMgF3 : Eu and KMgF3 : Eu-Ce single crystals

Authors
Su, HQ Jia, ZH Shi, CS
Citation
Hq. Su et al., Site substitution and energy transfer of Eu2+ and Ce3+ in KMgF3 : Eu and KMgF3 : Eu-Ce single crystals, CHEM J CH U, 22(7), 2001, pp. 1081-1085
Citations number
17
Categorie Soggetti
Chemistry
Journal title
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN journal
02510790 → ACNP
Volume
22
Issue
7
Year of publication
2001
Pages
1081 - 1085
Database
ISI
SICI code
0251-0790(200107)22:7<1081:SSAETO>2.0.ZU;2-C
Abstract
The high-resolution emission spectra of KMgF3 : Eu and KMgF3 : Eu-Ce single crystals were measured at 77 K. The site substitution of Eu2+ and Eu2+-Ce3 + co-doped system in KMgF3 was discussed. Eu2+ substituted for K+ sites on three different site-symmetry: cubic, trigonal and tetragonal. The attribut ion of all lines occurring in the emission spectra were ascertained. The in direct energy transfer from P-6(5/2) states of Eu2+ to 4f5d states of Ce3in KMgF3 : Eu-Ce was observed and the energy transfer mechanism was studied . The d-d interaction among levels was proposed.