Site-Selective Spectroscopy And Determination Of Energy-Levels In Eu3+-Doped Strontium Fluorophosphate

    Authors

    A. O. Wright; M. D. Seltzer; J. B. Gruber;B. H. T. Chai

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    J. Appl. Phys.

    Keywords

    EARTH; LUMINESCENCE; APATITES; LASER; IONS; Physics, Applied

    Abstract

    Absorbance and site-selective fluorescence studies of Eu3+:Sr-5(PO4)(3)F (Eu:SFAP) provide a nearly complete characterization of the Eu3+ energy levels. These results are compared with calculated energies generated by lattice-sum analysis. Eu3+ is found to occupy one site predominantly, but numerous minority sites are also evident; polarization studies of absorption and fluorescence lines provide evidence for the principle site having C-s symmetry. Vibronic transitions occur in spectra as well. Interpretation of the lattice location and charge compensation mechanism for the principal site is discussed in the context of obstacles arising from spectral interpretation, high crystal fields in SFAP, low site symmetry, low J-numbers in Eu3+ energy manifolds, and lattice covalency. Eu2+ emission upon ultraviolet excitation is also demonstrated; valleys in the emission profile are attributed to intracrystal absorption by Eu3+. (C) 1995 American Institute of Physics.

    Journal Title

    Journal of Applied Physics

    Volume

    78

    Issue/Number

    4

    Publication Date

    1-1-1995

    Document Type

    Article

    Language

    English

    First Page

    2456

    Last Page

    2467

    WOS Identifier

    WOS:A1995RP71800042

    ISSN

    0021-8979

    Share

    COinS