Synthesis and spectroscopy of lanthanide ion-doped Y2O3

Peter A. Tanner; Ka Leung Wong

doi:10.1021/jp035583o

Synthesis and spectroscopy of lanthanide ion-doped Y₂O₃

Peter A. Tanner
, Ka Leung Wong

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

83 Citations (Scopus)

Abstract

The preparation of Y₂O₃:Ln³⁺ (Ln = Eu, Er; nominal 1-0.1 mol % doping) by the preformed sol method is reported. The comparison of the emission spectra with more concentrated samples prepared by flame spray pyrolysis and conventional spray pyrolysis shows that emission from ⁵D₁ is quenched in the latter samples, and C_3i site emission is relatively weaker, when compared to C₂ site emission. Experimental data are provided to dispute the recent reassignments of the energy levels of Eu³⁺ situated at C_3i sites in Y₂O₃. The comparison of the emission spectrum of micrometer-scale Y₂O₃:Er³⁺ with that previously reported for nanoscale material shows a significant enhancement of hot bands in the latter. The enhanced population of ²H_11/2 leads to rather different behavior in the energy transfer phenomena of the nanoscale material.

Original language	English
Pages (from-to)	136-142
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	1
DOIs	https://doi.org/10.1021/jp035583o
Publication status	Published - 8 Jan 2004

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the Hong Kong University Grants Council Research Grant CityU 1114/00P. We are indebted to Professor Seung Bin Park, Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, for providing the FSP and CSP samples. We thank Dr. M. D. Faucher for useful discussions and Professor B. Tissue for sending reprints of his work.

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title = "Synthesis and spectroscopy of lanthanide ion-doped Y2O3",

abstract = "The preparation of Y2O3:Ln3+ (Ln = Eu, Er; nominal 1-0.1 mol \% doping) by the preformed sol method is reported. The comparison of the emission spectra with more concentrated samples prepared by flame spray pyrolysis and conventional spray pyrolysis shows that emission from 5D1 is quenched in the latter samples, and C3i site emission is relatively weaker, when compared to C2 site emission. Experimental data are provided to dispute the recent reassignments of the energy levels of Eu3+ situated at C3i sites in Y2O3. The comparison of the emission spectrum of micrometer-scale Y2O3:Er3+ with that previously reported for nanoscale material shows a significant enhancement of hot bands in the latter. The enhanced population of 2H11/2 leads to rather different behavior in the energy transfer phenomena of the nanoscale material.",

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AU - Tanner, Peter A.

AU - Wong, Ka Leung

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N2 - The preparation of Y2O3:Ln3+ (Ln = Eu, Er; nominal 1-0.1 mol % doping) by the preformed sol method is reported. The comparison of the emission spectra with more concentrated samples prepared by flame spray pyrolysis and conventional spray pyrolysis shows that emission from 5D1 is quenched in the latter samples, and C3i site emission is relatively weaker, when compared to C2 site emission. Experimental data are provided to dispute the recent reassignments of the energy levels of Eu3+ situated at C3i sites in Y2O3. The comparison of the emission spectrum of micrometer-scale Y2O3:Er3+ with that previously reported for nanoscale material shows a significant enhancement of hot bands in the latter. The enhanced population of 2H11/2 leads to rather different behavior in the energy transfer phenomena of the nanoscale material.

AB - The preparation of Y2O3:Ln3+ (Ln = Eu, Er; nominal 1-0.1 mol % doping) by the preformed sol method is reported. The comparison of the emission spectra with more concentrated samples prepared by flame spray pyrolysis and conventional spray pyrolysis shows that emission from 5D1 is quenched in the latter samples, and C3i site emission is relatively weaker, when compared to C2 site emission. Experimental data are provided to dispute the recent reassignments of the energy levels of Eu3+ situated at C3i sites in Y2O3. The comparison of the emission spectrum of micrometer-scale Y2O3:Er3+ with that previously reported for nanoscale material shows a significant enhancement of hot bands in the latter. The enhanced population of 2H11/2 leads to rather different behavior in the energy transfer phenomena of the nanoscale material.

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DO - 10.1021/jp035583o

M3 - RGC 21 - Publication in refereed journal

SN - 1520-6106

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

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