Photoluminescence and electron-beam excitation induced cathodoluminescence properties of novel green-emitting Ba4La6O(SiO4)6:Tb3+phosphors

G. Seeta Rama Raju; E. Pavitra; Jae Su Yu

doi:10.1016/j.ceramint.2016.04.011

Photoluminescence and electron-beam excitation induced cathodoluminescence properties of novel green-emitting Ba₄La₆O(SiO₄)₆:Tb³⁺phosphors

G. Seeta Rama Raju, E. Pavitra, Jae Su Yu

Department of Energy and Materials Engineering

Kyung Hee University

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

11 Scopus citations

Abstract

Tb³⁺ions activated Ba₄La₆O(SiO₄)₆ (BLSO:Tb³⁺) phosphors were synthesized by a citrate sol-gel method. The X-ray diffraction pattern confirmed their oxyapatite structure. The field-emission scanning electron microscope image established that the BLSO:Tb³⁺phosphor particles were closely-packed and acquired irregular shapes. The photoluminescence (PL) excitation spectra of BLSO:Tb³⁺phosphors showed intense f-d transitions along with low intense peaks corresponding to the f-f transitions of Tb³⁺ions in the lower energy region. The PL emission spectra displayed the characteristic emission bands of Tb³⁺ions, and the optimized concentrations were found to be at 1 and 6 mol% for blue and green emission peaks, respectively. The cathodoluminescece (CL) spectra exhibited a similar behavior that was observed in the PL spectra except the intensity variations in the blue and green regions. The CL spectra of the BLSO:6 mol% Tb³⁺phosphor unveiled accelerating voltage induced luminescent properties.

Original language	English
Pages (from-to)	11099-11103
Number of pages	5
Journal	Ceramics International
Volume	42
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2016.04.011
State	Published - 1 Jul 2016

Keywords

A. Sol-gel process
B. X-ray diffraction
C. Optical properties

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@article{13e77ea6b78647e7abeb739d3eb24087,

title = "Photoluminescence and electron-beam excitation induced cathodoluminescence properties of novel green-emitting Ba4La6O(SiO4)6:Tb3+phosphors",

abstract = "Tb3+ions activated Ba4La6O(SiO4)6 (BLSO:Tb3+) phosphors were synthesized by a citrate sol-gel method. The X-ray diffraction pattern confirmed their oxyapatite structure. The field-emission scanning electron microscope image established that the BLSO:Tb3+phosphor particles were closely-packed and acquired irregular shapes. The photoluminescence (PL) excitation spectra of BLSO:Tb3+phosphors showed intense f-d transitions along with low intense peaks corresponding to the f-f transitions of Tb3+ions in the lower energy region. The PL emission spectra displayed the characteristic emission bands of Tb3+ions, and the optimized concentrations were found to be at 1 and 6 mol% for blue and green emission peaks, respectively. The cathodoluminescece (CL) spectra exhibited a similar behavior that was observed in the PL spectra except the intensity variations in the blue and green regions. The CL spectra of the BLSO:6 mol% Tb3+phosphor unveiled accelerating voltage induced luminescent properties.",

keywords = "A. Sol-gel process, B. X-ray diffraction, C. Optical properties",

author = "{Seeta Rama Raju}, G. and E. Pavitra and Yu, {Jae Su}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

month = jul,

day = "1",

doi = "10.1016/j.ceramint.2016.04.011",

language = "English",

volume = "42",

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journal = "Ceramics International",

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TY - JOUR

T1 - Photoluminescence and electron-beam excitation induced cathodoluminescence properties of novel green-emitting Ba4La6O(SiO4)6:Tb3+phosphors

AU - Seeta Rama Raju, G.

AU - Pavitra, E.

AU - Yu, Jae Su

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Tb3+ions activated Ba4La6O(SiO4)6 (BLSO:Tb3+) phosphors were synthesized by a citrate sol-gel method. The X-ray diffraction pattern confirmed their oxyapatite structure. The field-emission scanning electron microscope image established that the BLSO:Tb3+phosphor particles were closely-packed and acquired irregular shapes. The photoluminescence (PL) excitation spectra of BLSO:Tb3+phosphors showed intense f-d transitions along with low intense peaks corresponding to the f-f transitions of Tb3+ions in the lower energy region. The PL emission spectra displayed the characteristic emission bands of Tb3+ions, and the optimized concentrations were found to be at 1 and 6 mol% for blue and green emission peaks, respectively. The cathodoluminescece (CL) spectra exhibited a similar behavior that was observed in the PL spectra except the intensity variations in the blue and green regions. The CL spectra of the BLSO:6 mol% Tb3+phosphor unveiled accelerating voltage induced luminescent properties.

AB - Tb3+ions activated Ba4La6O(SiO4)6 (BLSO:Tb3+) phosphors were synthesized by a citrate sol-gel method. The X-ray diffraction pattern confirmed their oxyapatite structure. The field-emission scanning electron microscope image established that the BLSO:Tb3+phosphor particles were closely-packed and acquired irregular shapes. The photoluminescence (PL) excitation spectra of BLSO:Tb3+phosphors showed intense f-d transitions along with low intense peaks corresponding to the f-f transitions of Tb3+ions in the lower energy region. The PL emission spectra displayed the characteristic emission bands of Tb3+ions, and the optimized concentrations were found to be at 1 and 6 mol% for blue and green emission peaks, respectively. The cathodoluminescece (CL) spectra exhibited a similar behavior that was observed in the PL spectra except the intensity variations in the blue and green regions. The CL spectra of the BLSO:6 mol% Tb3+phosphor unveiled accelerating voltage induced luminescent properties.

KW - A. Sol-gel process

KW - B. X-ray diffraction

KW - C. Optical properties

UR - http://www.scopus.com/inward/record.url?scp=84979486453&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2016.04.011

DO - 10.1016/j.ceramint.2016.04.011

M3 - Article

AN - SCOPUS:84979486453

SN - 0272-8842

VL - 42

SP - 11099

EP - 11103

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

Photoluminescence and electron-beam excitation induced cathodoluminescence properties of novel green-emitting Ba₄La₆O(SiO₄)₆:Tb³⁺phosphors

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Keywords

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