Concentration effect of Tm 3+ on cathodoluminescence properties of SiO 2:Tm 3+ and SiO 2:Ho 3+,Tm 3+ systems

M. S. Dhlamini; G. H. Mhlongo; H. C. Swart; O. M. Ntwaeaborwa; K. T. Hillie

doi:10.1016/j.physb.2011.09.091

Concentration effect of Tm ³⁺ on cathodoluminescence properties of SiO ₂:Tm ³⁺ and SiO ₂:Ho ³⁺,Tm ³⁺ systems

M. S. Dhlamini, G. H. Mhlongo, H. C. Swart, O. M. Ntwaeaborwa, K. T. Hillie

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

3 Citations (Scopus)

Abstract

Cathodoluminescence (CL) properties of SiO ₂ powders activated with thulium (Tm ³⁺) and holmium (Ho ³⁺) ions prepared by a solgel process were investigated. Different molar concentrations of Tm ³⁺ co-doped with Ho ³⁺ were studied. The 460 nm peak was monitored and the influence of the beam energy and concentration of Tm ³⁺ ions on the emission properties of this peak was also monitored. The peculiar behavior whereby the 460 nm emission peak decreases and the increase in the 705 and 865 nm peaks with the increase in the concentration of Tm ³⁺ ions is reported. The relationship between the accelerating beam voltage and the CL intensity of the blue emission peak (460 nm peak) is established. Morphology, particle size and optical properties were characterized with Scanning electron microscopy (SEM), UV/VIS Lambda 750 S spectrometer and Auger electron spectroscopy (AES) equipped with Ocean Optics S2000, respectively.

Original language	English
Pages (from-to)	1582-1585
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	407
Issue number	10
DOIs	https://doi.org/10.1016/j.physb.2011.09.091
Publication status	Published - 15 May 2012
Externally published	Yes

Keywords

AES
Beam voltage
Cathodoluminescence
SiO
Tm concentration

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2011.09.091

Cite this

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title = "Concentration effect of Tm 3+ on cathodoluminescence properties of SiO 2:Tm 3+ and SiO 2:Ho 3+,Tm 3+ systems",

abstract = "Cathodoluminescence (CL) properties of SiO 2 powders activated with thulium (Tm 3+) and holmium (Ho 3+) ions prepared by a solgel process were investigated. Different molar concentrations of Tm 3+ co-doped with Ho 3+ were studied. The 460 nm peak was monitored and the influence of the beam energy and concentration of Tm 3+ ions on the emission properties of this peak was also monitored. The peculiar behavior whereby the 460 nm emission peak decreases and the increase in the 705 and 865 nm peaks with the increase in the concentration of Tm 3+ ions is reported. The relationship between the accelerating beam voltage and the CL intensity of the blue emission peak (460 nm peak) is established. Morphology, particle size and optical properties were characterized with Scanning electron microscopy (SEM), UV/VIS Lambda 750 S spectrometer and Auger electron spectroscopy (AES) equipped with Ocean Optics S2000, respectively.",

keywords = "AES, Beam voltage, Cathodoluminescence, SiO, Tm concentration",

author = "Dhlamini, {M. S.} and Mhlongo, {G. H.} and Swart, {H. C.} and Ntwaeaborwa, {O. M.} and Hillie, {K. T.}",

year = "2012",

month = may,

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doi = "10.1016/j.physb.2011.09.091",

language = "English",

volume = "407",

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journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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T1 - Concentration effect of Tm 3+ on cathodoluminescence properties of SiO 2:Tm 3+ and SiO 2:Ho 3+,Tm 3+ systems

AU - Dhlamini, M. S.

AU - Mhlongo, G. H.

AU - Swart, H. C.

AU - Ntwaeaborwa, O. M.

AU - Hillie, K. T.

PY - 2012/5/15

Y1 - 2012/5/15

N2 - Cathodoluminescence (CL) properties of SiO 2 powders activated with thulium (Tm 3+) and holmium (Ho 3+) ions prepared by a solgel process were investigated. Different molar concentrations of Tm 3+ co-doped with Ho 3+ were studied. The 460 nm peak was monitored and the influence of the beam energy and concentration of Tm 3+ ions on the emission properties of this peak was also monitored. The peculiar behavior whereby the 460 nm emission peak decreases and the increase in the 705 and 865 nm peaks with the increase in the concentration of Tm 3+ ions is reported. The relationship between the accelerating beam voltage and the CL intensity of the blue emission peak (460 nm peak) is established. Morphology, particle size and optical properties were characterized with Scanning electron microscopy (SEM), UV/VIS Lambda 750 S spectrometer and Auger electron spectroscopy (AES) equipped with Ocean Optics S2000, respectively.

AB - Cathodoluminescence (CL) properties of SiO 2 powders activated with thulium (Tm 3+) and holmium (Ho 3+) ions prepared by a solgel process were investigated. Different molar concentrations of Tm 3+ co-doped with Ho 3+ were studied. The 460 nm peak was monitored and the influence of the beam energy and concentration of Tm 3+ ions on the emission properties of this peak was also monitored. The peculiar behavior whereby the 460 nm emission peak decreases and the increase in the 705 and 865 nm peaks with the increase in the concentration of Tm 3+ ions is reported. The relationship between the accelerating beam voltage and the CL intensity of the blue emission peak (460 nm peak) is established. Morphology, particle size and optical properties were characterized with Scanning electron microscopy (SEM), UV/VIS Lambda 750 S spectrometer and Auger electron spectroscopy (AES) equipped with Ocean Optics S2000, respectively.

KW - AES

KW - Beam voltage

KW - Cathodoluminescence

KW - SiO

KW - Tm concentration

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