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Visualization of highly graded oxygen vacancy profiles in lead-zirconate-titanate by spectrally resolved cathodoluminescence spectroscopy

Visualization of highly graded oxygen vacancy profiles in lead-zirconate-titanate by spectrally resolved cathodoluminescence spectroscopy
Visualization of highly graded oxygen vacancy profiles in lead-zirconate-titanate by spectrally resolved cathodoluminescence spectroscopy
The ultraviolet and visible cathodoluminescence (CL) emitted at room temperature from bulk hard lead-zirconate-titanate polycrystalline perovskite has been systematically collected before and after an annealing cycle conducted in a reducing atmosphere. Spectroscopic assessments have been made of the in-depth stoichiometric profile developed upon annealing from the sample surface toward the subsurface. Trapping of electronic charge and local atomic scale distortions in the perovskite oxygen octahedron influences the variation observed in visible CL emission, while lattice distortions upon annealing directly arise from the formation of oxygen vacancies.
0003-6951
Matsutani, Atsuo
ec240e1a-db61-4fec-b60e-04850528110f
Luo, Zhenhua
eb242e50-a73e-474f-809f-4924cfed68c2
Pojprapai, Soodkhet
19da0711-ccd8-44c7-8499-b19e3caf1956
Hoffman, Mark
1d549729-a5d6-4241-a467-cac304447980
Pezzotti, Giuseppe
c9729863-cd30-43e5-8614-7d78412885a6
Matsutani, Atsuo
ec240e1a-db61-4fec-b60e-04850528110f
Luo, Zhenhua
eb242e50-a73e-474f-809f-4924cfed68c2
Pojprapai, Soodkhet
19da0711-ccd8-44c7-8499-b19e3caf1956
Hoffman, Mark
1d549729-a5d6-4241-a467-cac304447980
Pezzotti, Giuseppe
c9729863-cd30-43e5-8614-7d78412885a6

Matsutani, Atsuo, Luo, Zhenhua, Pojprapai, Soodkhet, Hoffman, Mark and Pezzotti, Giuseppe (2009) Visualization of highly graded oxygen vacancy profiles in lead-zirconate-titanate by spectrally resolved cathodoluminescence spectroscopy. Applied Physics Letters. (doi:10.1063/1.3245317).

Record type: Article

Abstract

The ultraviolet and visible cathodoluminescence (CL) emitted at room temperature from bulk hard lead-zirconate-titanate polycrystalline perovskite has been systematically collected before and after an annealing cycle conducted in a reducing atmosphere. Spectroscopic assessments have been made of the in-depth stoichiometric profile developed upon annealing from the sample surface toward the subsurface. Trapping of electronic charge and local atomic scale distortions in the perovskite oxygen octahedron influences the variation observed in visible CL emission, while lattice distortions upon annealing directly arise from the formation of oxygen vacancies.

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Published date: 2009
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 364514
URI: https://eprints.soton.ac.uk/id/eprint/364514
ISSN: 0003-6951
PURE UUID: dfb5d4cc-6ede-49c3-b1db-3cf958c3ae90
ORCID for Zhenhua Luo: ORCID iD orcid.org/0000-0003-0766-6174

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Date deposited: 02 May 2014 09:36
Last modified: 20 Jul 2019 00:37

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