Synthesis and optical properties of Er3+ and Eu3+ doped SrAl2O4 phosphor ceramic

Date

2011-11-01

Author

Ayvacikli, M.
Ege, A.
Yerci, Selçuk
Can, N.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

85
views

0
downloads

We report, for the first time on luminescence from a Er3+ doped SrAl2O4 phosphor. Effects of Eu3+ doping were also studied. The influence of rare-earth doping in crystal structure and its optical properties were analysed by means of X-ray diffraction (XRD), Raman scattering, optical absorption, excitation and emission (PL) spectroscopy, thermally stimulated luminescence (TSL) and scanning electron microscope (SEM). Luminescence spectra and luminescence decay curves for Er3+ transitions in the near infrared region were recorded. The PL maximum for Eu doped SrAl2O4 is obtained at 620 nm and corresponds to the orange region of the spectrum. Diffraction patterns reveal a dominant phase, characteristic of the monoclinic SrAl2O4 compound and the presence of dopants has no effect on the basic crystal structure of SrAl2O4. The shapes of the glow curves are different for each dopant irradiated with either a Sr-90-Y-90 beta source, or UV light at 311 nm, and in detail the TL signals differ somewhat between Er and Eu dopants.

Subject Keywords

Strontium Aluminate, Rare Earths, Optical Properties, Photoluminescence, Raman Scattering, SEM

URI

https://hdl.handle.net/11511/31522

Journal

JOURNAL OF LUMINESCENCE

DOI

https://doi.org/10.1016/j.jlumin.2011.05.051

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Synthesis and thermoluminescence properties of rare earth oxides (Y, Ce-Lu) doped lithium triborate Yılmaz, Ayşen; Yılmaz, Ayşen (2011-06-01) Lithium triborate (LiB(3)O(5)) was synthesized by high temperature solid-state reaction method, and then rare earth oxides were doped into LiB(3)O(5) to enhance its thermoluminescent (TL) properties. The identification and characteristics of the obtained compounds were determined by X-ray diffraction (XRD), Fourier transform infrared (FTIR) analyses, differential thermal analyses (DTA) and scanning electron microscopy (SEM). The glow curves were obtained using a thermoluminescent (TL) reader. The results re...
Synthesis of 4-Phenylselenyl-1h-pyrazoles by electrophilic cyclization Demirci, Deniz; Zora, Metin; Department of Chemistry (2011) In this study, the synthesis of 5-ferrocenyl/aryl-4-(phenylselenyl)-1H-pyrazole derivatives was investigated since the integration of ferrocenyl and selenium moieties into pyrazole derivatives may increase their current biological activities. Initially, the starting propargyl aldehydes were synthesized from corresponding acetylenes. Subsequently, propargyl aldehydes were reacted with hydrazines to yield corresponding hydrazones. Then the in situ synthesized hydrazones were subjected to electrophilic cycliza...
Synthesis of lithium borides by mechanochemical process Önder, Onur; Önder, Onur; Department of Metallurgical and Materials Engineering (2009) The aim of this study was to investigate synthesis of lithium borides by mechanochemical synthesis from oxides. Lithium borides have promising properties in the area of high energy additives and hydrogen storage. Lithium oxide (Li2O), boron oxide (B2O3) and Mg were used to synthesize lithium borides. Experiments were conducted in a planetary ball mill under argon atmosphere. Analyses of the products were done by X-ray diffraction and scanning electron microscopy. Trilithium tetradecaboride (Li3B14) peaks we...
Characterization of polypyrrole-thiophene capped poly(methyl methacrylate) via pyrolysis mass spectrometry Athar, Imran; Hacaloğlu, Jale; Toppare, Levent Kamil (2004-10-01) This article reports the direct pyrolysis mass spectrometry results on p-toluene sulfonate doped polypyrrole synthesized through the thiophene moities of thiophene-capped poly(methyl methacrylate), TPMMA. Pyrolysis data gave strong evidence for decomposition of the matrix polymer TPMMA during the electrochemical polymerization of pyrrole with a TPMMA coated anode. However, evolution of products diagnostic of TPMMA around 370°C, the temperature region of PPY degradation, and presence of fragments involving b...
Synthesis and photoluminescence of ultra-pure germanium nanoparticles Chivas, R.; Yerci, Selçuk; Li, R.; Dal Negro, L.; Morse, T. F. (2011-09-01) We have used aerosol deposition to synthesize defect and micro-strain free, ultra-pure germanium nanoparticles. Transmission electron microscopy images show a core-shell configuration with highly crystalline core material. Powder X-ray diffraction measurements verify the presence of highly pure, nano-scale germanium with average crystallite size of 30 nm and micro-strain of 0.058%. X-ray photoelectron spectroscopy demonstrates that GeOx (x <= 2) shells cover the surfaces of the nanoparticles. Under optical ...

Citation Formats

M. Ayvacikli, A. Ege, S. Yerci, and N. Can, “Synthesis and optical properties of Er3+ and Eu3+ doped SrAl2O4 phosphor ceramic,” JOURNAL OF LUMINESCENCE, pp. 2432–2439, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31522.