Luminescence of delafossite-type CuAlO2 fibers with Eu substitution for Al cations

Yin Liu; Yuxuan Gong; Nathan P. Mellott; Bu Wang; Haitao Ye; Yiquan Wu

doi:10.1080/14686996.2016.1172024

Luminescence of delafossite-type CuAlO₂ fibers with Eu substitution for Al cations

Yin Liu, Yuxuan Gong, Nathan P. Mellott, Bu Wang, Haitao Ye, Yiquan Wu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

CuAlO₂ has been examined as a potential luminescent material by substituting Eu for Al cations in the delafossite structure. CuAlO₂:Eu³⁺ nanofibers have been prepared via electrospinning for the ease of mitigating synthesis requirements and for future optoelectronics and emerging applications. Single-phase CuAlO₂ fibers could be obtained at a temperature of 1100 °C in air. The Eu was successfully doped in the delafossite structure and two strong emission bands at ~405 and 610 nm were observed in the photoluminescence spectra. These bands are due to the intrinsic near-band-edge transition of CuAlO₂ and the f-f transition of the Eu³⁺ activator, respectively. Further electrical characterization indicated that these fibers exhibit semiconducting behavior and the introduction of Eu could act as band-edge modifiers, thus changing the thermal activation energies. In light of this study, CuAlO₂:Eu³⁺ fibers with both strong photoluminescence and p-type conductivity could be produced by tailoring the rare earth doping concentrations.

Original language	English
Pages (from-to)	200-209
Number of pages	10
Journal	Science and Technology of Advanced Materials
Volume	17
Issue number	1
Early online date	25 Apr 2016
DOIs	https://doi.org/10.1080/14686996.2016.1172024
Publication status	Published - 2016

Bibliographical note

© 2016 The author(s). Published by national institute for Materials Science in partnership with Taylor & Francis.This is an open access article distributed under the terms of the creative commons attribution license CC-By http://creativecommons.org/licenses/by/4.0/which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Funding: US Air Force Office of Scientific Research (contract FA9550-14-1-0155); and FP7 Marie Curie Action (project No: 295208)

Keywords

CuAlO
electrospinning
luminescent materials

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10.1080/14686996.2016.1172024Licence: CC BY 3.0

Luminescence of delafossite type CuAlO2 fibers with Eu substitution for Al cations
© 2016 The author(s). Published by national institute for Materials Science in partnership with Taylor & Francis.This is an open access article distributed under the terms of the creative commons attribution license CC-By http://creativecommons.org/licenses/by/4.0/which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 2.56 MBLicence: CC BY 3.0

http://www.tandfonline.com/10.1080/14686996.2016.1172024Licence: CC BY 3.0

Cite this

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title = "Luminescence of delafossite-type CuAlO2 fibers with Eu substitution for Al cations",

abstract = "CuAlO2 has been examined as a potential luminescent material by substituting Eu for Al cations in the delafossite structure. CuAlO2:Eu3+ nanofibers have been prepared via electrospinning for the ease of mitigating synthesis requirements and for future optoelectronics and emerging applications. Single-phase CuAlO2 fibers could be obtained at a temperature of 1100 °C in air. The Eu was successfully doped in the delafossite structure and two strong emission bands at ~405 and 610 nm were observed in the photoluminescence spectra. These bands are due to the intrinsic near-band-edge transition of CuAlO2 and the f-f transition of the Eu3+ activator, respectively. Further electrical characterization indicated that these fibers exhibit semiconducting behavior and the introduction of Eu could act as band-edge modifiers, thus changing the thermal activation energies. In light of this study, CuAlO2:Eu3+ fibers with both strong photoluminescence and p-type conductivity could be produced by tailoring the rare earth doping concentrations.",

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author = "Yin Liu and Yuxuan Gong and Mellott, {Nathan P.} and Bu Wang and Haitao Ye and Yiquan Wu",

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AU - Ye, Haitao

AU - Wu, Yiquan

N1 - © 2016 The author(s). Published by national institute for Materials Science in partnership with Taylor & Francis.This is an open access article distributed under the terms of the creative commons attribution license CC-By http://creativecommons.org/licenses/by/4.0/which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Funding: US Air Force Office of Scientific Research (contract FA9550-14-1-0155); and FP7 Marie Curie Action (project No: 295208)

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N2 - CuAlO2 has been examined as a potential luminescent material by substituting Eu for Al cations in the delafossite structure. CuAlO2:Eu3+ nanofibers have been prepared via electrospinning for the ease of mitigating synthesis requirements and for future optoelectronics and emerging applications. Single-phase CuAlO2 fibers could be obtained at a temperature of 1100 °C in air. The Eu was successfully doped in the delafossite structure and two strong emission bands at ~405 and 610 nm were observed in the photoluminescence spectra. These bands are due to the intrinsic near-band-edge transition of CuAlO2 and the f-f transition of the Eu3+ activator, respectively. Further electrical characterization indicated that these fibers exhibit semiconducting behavior and the introduction of Eu could act as band-edge modifiers, thus changing the thermal activation energies. In light of this study, CuAlO2:Eu3+ fibers with both strong photoluminescence and p-type conductivity could be produced by tailoring the rare earth doping concentrations.

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