skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: On the quenching of Bi{sup 3+} luminescence in the pyrochlore Gd{sub 2}GaSbO{sub 7}

Abstract

The luminescence of Bi{sup 3+} in the pyrochlore Gd{sub 2}GaSbO{sub 7} is evaluated in the 15 to 300 K temperature range. The rapid thermal quenching of Bi{sup 3+} luminescence, despite the small Stokes shift, is postulated to involve a photoionization process arising from the interaction between the Bi{sup 3+} {sup 3}P{sub 0,1} excited states and the host lattice conduction band. The blue emission of the host lattice is attributed to the octahedral gallate groups of Gd{sub 2}GaSbO{sub 7}. The Bi{sup 3+} luminescence Gd{sub 2}GaSbO{sub 7}, La{sub 2}Zr{sub 2}O{sub 7} (pyrochlore structure), Y{sub 2}O{sub 3} (fluorite structure), and materials with the perovskite structure are compared to gain insight into structure-photoionization issues.

Authors:
;  [1]
  1. GE Corporate Research and Development, Niskayuna, NY (United States)
Publication Date:
OSTI Identifier:
696681
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146; Journal Issue: 2; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LUMINESCENCE; GADOLINIUM OXIDES; GALLIUM OXIDES; ANTIMONY OXIDES; DOPED MATERIALS; BISMUTH ADDITIONS; TEMPERATURE DEPENDENCE; EXCITED STATES; EXPERIMENTAL DATA

Citation Formats

Srivastava, A.M., and Szarowski, A. On the quenching of Bi{sup 3+} luminescence in the pyrochlore Gd{sub 2}GaSbO{sub 7}. United States: N. p., 1999. Web. doi:10.1006/jssc.1999.8408.
Srivastava, A.M., & Szarowski, A. On the quenching of Bi{sup 3+} luminescence in the pyrochlore Gd{sub 2}GaSbO{sub 7}. United States. doi:10.1006/jssc.1999.8408.
Srivastava, A.M., and Szarowski, A. Wed . "On the quenching of Bi{sup 3+} luminescence in the pyrochlore Gd{sub 2}GaSbO{sub 7}". United States. doi:10.1006/jssc.1999.8408.
@article{osti_696681,
title = {On the quenching of Bi{sup 3+} luminescence in the pyrochlore Gd{sub 2}GaSbO{sub 7}},
author = {Srivastava, A.M. and Szarowski, A.},
abstractNote = {The luminescence of Bi{sup 3+} in the pyrochlore Gd{sub 2}GaSbO{sub 7} is evaluated in the 15 to 300 K temperature range. The rapid thermal quenching of Bi{sup 3+} luminescence, despite the small Stokes shift, is postulated to involve a photoionization process arising from the interaction between the Bi{sup 3+} {sup 3}P{sub 0,1} excited states and the host lattice conduction band. The blue emission of the host lattice is attributed to the octahedral gallate groups of Gd{sub 2}GaSbO{sub 7}. The Bi{sup 3+} luminescence Gd{sub 2}GaSbO{sub 7}, La{sub 2}Zr{sub 2}O{sub 7} (pyrochlore structure), Y{sub 2}O{sub 3} (fluorite structure), and materials with the perovskite structure are compared to gain insight into structure-photoionization issues.},
doi = {10.1006/jssc.1999.8408},
journal = {Journal of Solid State Chemistry},
number = 2,
volume = 146,
place = {United States},
year = {1999},
month = {9}
}