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:
6104788
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146:2; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIMONY OXIDES; BISMUTH ADDITIONS; DOPED MATERIALS; EXCITED STATES; EXPERIMENTAL DATA; GADOLINIUM OXIDES; GALLIUM OXIDES; LUMINESCENCE; TEMPERATURE DEPENDENCE; ALLOYS; ANTIMONY COMPOUNDS; BISMUTH ALLOYS; CHALCOGENIDES; DATA; ENERGY LEVELS; GADOLINIUM COMPOUNDS; GALLIUM COMPOUNDS; INFORMATION; MATERIALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties

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_6104788,
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},
issn = {0022-4596},
number = ,
volume = 146:2,
place = {United States},
year = {1999},
month = {9}
}