Luminescence investigations on LiAl5O8:Tb 3+ nanocrystalline phosphors

Shreyas S. Pitale; Vinay Kumar; Indrajit Nagpure; O. M. Ntwaeaborwa; H. C. Swart

doi:10.1016/j.cap.2010.08.002

Luminescence investigations on LiAl₅O₈:Tb ³⁺ nanocrystalline phosphors

Shreyas S. Pitale, Vinay Kumar, Indrajit Nagpure, O. M. Ntwaeaborwa, H. C. Swart

University of The Free State

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

32 Citations (Scopus)

Abstract

Tb³⁺-doped porous LiAl₅O₈ nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of ⁵D₄→ ⁷F₅ of the Tb³⁺ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb³⁺ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.

Original language	English
Pages (from-to)	341-345
Number of pages	5
Journal	Current Applied Physics
Volume	11
Issue number	3
DOIs	https://doi.org/10.1016/j.cap.2010.08.002
Publication status	Published - May 2011
Externally published	Yes

Keywords

LiAlO
Nanophosphors
Photoluminescence
Rare earth ions
Spinel

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

Access to Document

10.1016/j.cap.2010.08.002

Cite this

@article{4a1af8ffc57f4c90a0f9b642d5ea158c,

title = "Luminescence investigations on LiAl5O8:Tb 3+ nanocrystalline phosphors",

abstract = "Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of 5D4→ 7F5 of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.",

keywords = "LiAlO, Nanophosphors, Photoluminescence, Rare earth ions, Spinel",

author = "Pitale, \{Shreyas S.\} and Vinay Kumar and Indrajit Nagpure and Ntwaeaborwa, \{O. M.\} and Swart, \{H. C.\}",

year = "2011",

month = may,

doi = "10.1016/j.cap.2010.08.002",

language = "English",

volume = "11",

pages = "341--345",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

number = "3",

}

TY - JOUR

T1 - Luminescence investigations on LiAl5O8:Tb 3+ nanocrystalline phosphors

AU - Pitale, Shreyas S.

AU - Kumar, Vinay

AU - Nagpure, Indrajit

AU - Ntwaeaborwa, O. M.

AU - Swart, H. C.

PY - 2011/5

Y1 - 2011/5

N2 - Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of 5D4→ 7F5 of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.

AB - Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of 5D4→ 7F5 of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.

KW - LiAlO

KW - Nanophosphors

KW - Photoluminescence

KW - Rare earth ions

KW - Spinel

UR - https://www.scopus.com/pages/publications/79951673369

U2 - 10.1016/j.cap.2010.08.002

DO - 10.1016/j.cap.2010.08.002

M3 - Article

AN - SCOPUS:79951673369

SN - 1567-1739

VL - 11

SP - 341

EP - 345

JO - Current Applied Physics

JF - Current Applied Physics

IS - 3

ER -