Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442912 | Optical Materials | 2017 | 10 Pages |
Abstract
Two types of new Sm(III) chelates; phosphoro and sulfono-derivatives of beta-diketones and polymeric materials on their base were obtained and characterized by the high resolution photoluminescence spectroscopy at 293, 77 and 4Â K, as well as by luminescence decay times. Those new type of phosphors shows strong orange emission after excitation at 404Â nm Sm(III) states and 280Â nm ligand bands. Radiative transition probabilities were calculated from absorption spectra and Judd- Ofelt parameters evaluated. Effects of the temperature, rigidity of polymeric lattice and the energy of excitation on intensities of the Sm(III) fluorescence were studied. The paths of energy transfer are analysed and mechanism of this process is proposed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Joanna CybiÅska, MaÅgorzata Guzik, Yuriy Gerasymchuk, Victor A. Trush, RadosÅaw Lisiecki, Janina Legendziewicz,