Optical characterization of Pr{sup 3+}-doped yttria-stabilized zirconia single crystals

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.5856· OSTI ID:542228

Savoini, B; Munoz Santiuste, J E; Gonzalez, R ^[1]

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1. Departamento de Fisica, Escuela Politecnica Superior, Universidad Carlos III de Madrid, Butarque 15, Leganes E-28913, Madrid (Spain)

The optical absorption and fluorescence of Pr{sup 3+} ions in yttria-stabilized zirconia single crystals are investigated. Fluorescence emissions from the {sup 1}D{sub 2} level are clearly dominant and low intensity emission lines from the {sup 3}P{sub 0} and {sup 1}G{sub 4} states are also observed. Analysis with the Judd-Ofelt theory of the absorption intensities has been made assuming that only {approximately}40{percent} of the praseodymium ions contribute to the optical absorption bands. Quantum efficiency values of {eta}({sup 3}P{sub 0}){approximately}0.2 and {eta}({sup 1}D{sub 2}){approximately} 1 are obtained at room temperature. {sup 1}D{sub 2} fluorescence quenching has been observed in heavily-doped samples due to cross relaxation processes among neighboring Pr{sup 3+} ions. Analysis using the Inokuti-Hirayama model shows that electric dipole-dipole interactions are mainly responsible for the quenching effect. Pr{sup 3+} ions are present in seven and sixfold configurations with a statistical distribution. The energy position of the 4f5d configuration is very different for each center. The fluorescence dynamics is explained by a mechanism involving thermally assisted population of the {sup 3}P{sub 1,2}+{sup 1}I{sub 6} upper levels and fast relaxation to the {sup 1}D{sub 2} level via states of the excited 4f5d configuration. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 542228
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 10 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
CRYSTAL DOPING
EXCITED STATES
FLUORESCENCE
INFRARED SPECTRA
OPTICAL PROPERTIES
PRASEODYMIUM
PRASEODYMIUM ADDITIONS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES