Inhomogenous Broadening, Charge Compensation, and Luminescence Quenching in Ce3+-Doped Sr3AlO4F Phosphors

Setlur, A. A.; Porob, D. G.; Happek, U.; Brik, M. G.

doi:10.1149/2.0111601jss

Title: Inhomogenous Broadening, Charge Compensation, and Luminescence Quenching in Ce³⁺-Doped Sr₃AlO₄F Phosphors

Journal Article · Thu Sep 24 00:00:00 EDT 2015 · ECS Journal of Solid State Science and Technology

DOI:https://doi.org/10.1149/2.0111601jss· OSTI ID:1438467

Setlur, A. A. ^[1]; Porob, D. G. ^[2]; Happek, U. ^[3]; Brik, M. G. ^[4]

General Electric (GE) Global Research, Niskayuna, NY (United States)
General Electric (GE) Global Research, Bangalore (India)
Univ. of Georgia, Athens, GA (United States). Dept. of Physics and Astronomy
Univ. of Tartu (Estonia). Inst. of Physics

The local coordination around luminescent ions in phosphors can affect the properties of these materials. Here, we analyze the Ce³⁺ luminescence for the various Ce³⁺ centers in Sr₃AlO₄F-based phosphors and use the excitation, emission, and quenching of these phosphors to infer aspects of the local coordination. It is shown that Ce³⁺ centers with lower energy 4f¹→5d¹ absorption bands are likely from charge compensation effects by the replacement of F^- by O^2-. In addition, at higher RE³⁺ concentrations, additional Ce³⁺ centers with even lower energy 4f¹→5d¹ absorption bands are present, presumably due to Ce³⁺-RE³⁺ pair formation and O^2- charge compensation. These Ce³⁺ centers with lower energy 4f¹→5d¹ absorption bands have their luminescence strongly quenched at room temperature. The relationships between composition and Ce³⁺ luminescence quenching for Sr₃AlO₄F-based phosphors are also discussed, giving evidence that Ce³⁺(5d¹) ionization is the main cause for luminescence quenching in these materials.

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Research Organization:: General Electric Co., Boston, MA (United States)

Sponsoring Organization:: USDOE; Tallinn Univ. of Technology (Estonia); European Union (EU)

Grant/Contract Number:: FC26-06NT42934; EE0003251

OSTI ID:: 1438467

Journal Information:: ECS Journal of Solid State Science and Technology, Vol. 5, Issue 1; ISSN 2162-8769

Publisher:: Electrochemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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Local coordination, electronic structure, and thermal quenching of Ce ³⁺ in isostructural Sr ₂ GdAlO ₅ and Sr ₃ AlO ₄ F phosphors Ji, Haipeng; Xu, Jian; Asami, Kazuki Journal of the American Ceramic Society, Vol. 102, Issue 3 https://doi.org/10.1111/jace.15985	journal	August 2018

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36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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Energy transfer
Luminescence
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Title: Inhomogenous Broadening, Charge Compensation, and Luminescence Quenching in Ce3+-Doped Sr3AlO4F Phosphors

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Title: Inhomogenous Broadening, Charge Compensation, and Luminescence Quenching in Ce³⁺-Doped Sr₃AlO₄F Phosphors