Phase transition and optical properties of Ba1-xZnxAl2O4:0.1% Eu3+ prepared via citrate sol-gel method

V. M. Maphiri; J. Wesley-Smith; S. V. Motloung

doi:10.1016/j.jlumin.2019.116710

Phase transition and optical properties of Ba_1-xZn_xAl₂O₄:0.1% Eu³⁺ prepared via citrate sol-gel method

V. M. Maphiri^*, J. Wesley-Smith, S. V. Motloung

^*Corresponding author for this work

Physics

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

10 Citations (Scopus)

Abstract

Undoped and Ba_1-xZn_xAl₂O₄:0.1% Eu³⁺ series (0 ≤ x ≤ 1) were successfully prepared using the citrate sol-gel method. X-ray diffraction (XRD) results revealed that depending on the Zn moles, the prepared samples could be indexed to hexagonal BaAl₂O₄ and cubic ZnAl₂O₄ structures. Scanning electron microscopy (SEM) shows that varying Zn moles changes the morphology of the prepared sample. Transmission electron microscopy (TEM) results confirmed the nano-crystallite shape and size of the structures seen in SEM, and the multiphase nature predicted by XRD. The photoluminescence (PL) results showed distinct emission peaks, which were either attributed to the host intrinsic intra-band gap defects or to characteristic transitions within Eu³⁺ ions. The International Commission on Illumination (CIE) colour coordinates showed that the emission colour can be tuned when varying the Zn mole.

Original language	English
Article number	116710
Journal	Journal of Luminescence
Volume	215
DOIs	https://doi.org/10.1016/j.jlumin.2019.116710
Publication status	Published - Nov 2019

Keywords

Eu-doped
Luminescence
Multiphase
Zn mole

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title = "Phase transition and optical properties of Ba1-xZnxAl2O4:0.1% Eu3+ prepared via citrate sol-gel method",

abstract = "Undoped and Ba1-xZnxAl2O4:0.1% Eu3+ series (0 ≤ x ≤ 1) were successfully prepared using the citrate sol-gel method. X-ray diffraction (XRD) results revealed that depending on the Zn moles, the prepared samples could be indexed to hexagonal BaAl2O4 and cubic ZnAl2O4 structures. Scanning electron microscopy (SEM) shows that varying Zn moles changes the morphology of the prepared sample. Transmission electron microscopy (TEM) results confirmed the nano-crystallite shape and size of the structures seen in SEM, and the multiphase nature predicted by XRD. The photoluminescence (PL) results showed distinct emission peaks, which were either attributed to the host intrinsic intra-band gap defects or to characteristic transitions within Eu3+ ions. The International Commission on Illumination (CIE) colour coordinates showed that the emission colour can be tuned when varying the Zn mole.",

keywords = "Eu-doped, Luminescence, Multiphase, Zn mole",

author = "Maphiri, {V. M.} and J. Wesley-Smith and Motloung, {S. V.}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

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doi = "10.1016/j.jlumin.2019.116710",

language = "English",

volume = "215",

journal = "Journal of Luminescence",

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TY - JOUR

T1 - Phase transition and optical properties of Ba1-xZnxAl2O4:0.1% Eu3+ prepared via citrate sol-gel method

AU - Maphiri, V. M.

AU - Wesley-Smith, J.

AU - Motloung, S. V.

PY - 2019/11

Y1 - 2019/11

N2 - Undoped and Ba1-xZnxAl2O4:0.1% Eu3+ series (0 ≤ x ≤ 1) were successfully prepared using the citrate sol-gel method. X-ray diffraction (XRD) results revealed that depending on the Zn moles, the prepared samples could be indexed to hexagonal BaAl2O4 and cubic ZnAl2O4 structures. Scanning electron microscopy (SEM) shows that varying Zn moles changes the morphology of the prepared sample. Transmission electron microscopy (TEM) results confirmed the nano-crystallite shape and size of the structures seen in SEM, and the multiphase nature predicted by XRD. The photoluminescence (PL) results showed distinct emission peaks, which were either attributed to the host intrinsic intra-band gap defects or to characteristic transitions within Eu3+ ions. The International Commission on Illumination (CIE) colour coordinates showed that the emission colour can be tuned when varying the Zn mole.

AB - Undoped and Ba1-xZnxAl2O4:0.1% Eu3+ series (0 ≤ x ≤ 1) were successfully prepared using the citrate sol-gel method. X-ray diffraction (XRD) results revealed that depending on the Zn moles, the prepared samples could be indexed to hexagonal BaAl2O4 and cubic ZnAl2O4 structures. Scanning electron microscopy (SEM) shows that varying Zn moles changes the morphology of the prepared sample. Transmission electron microscopy (TEM) results confirmed the nano-crystallite shape and size of the structures seen in SEM, and the multiphase nature predicted by XRD. The photoluminescence (PL) results showed distinct emission peaks, which were either attributed to the host intrinsic intra-band gap defects or to characteristic transitions within Eu3+ ions. The International Commission on Illumination (CIE) colour coordinates showed that the emission colour can be tuned when varying the Zn mole.

KW - Eu-doped

KW - Luminescence

KW - Multiphase

KW - Zn mole

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DO - 10.1016/j.jlumin.2019.116710

M3 - Article

AN - SCOPUS:85070892668

SN - 0022-2313

VL - 215

JO - Journal of Luminescence

JF - Journal of Luminescence

M1 - 116710

ER -

Phase transition and optical properties of Ba_1-xZn_xAl₂O₄:0.1% Eu³⁺ prepared via citrate sol-gel method

Abstract

Keywords

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