TL and OSL properties of Mn2+-doped MgGa2O4 phosphor

Date

2018-04-01

Author

LUCHECHKO, ANDRİY
ZHYDACHEVSKYY, YAROSLAV
MARABA, DİREN
Bulur, Enver
UBİZSKİİ, SERGİY
KRAVETS, OLGA

Metadata

Show full item record

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

Item Usage Stats

210
views

0
downloads

The oxide MgGa2O4 spinel ceramics doped with Mn2+ ions was synthesized by a solid-state reaction at 1200 degrees C in air. The activator concentration was equal 0.05 mol% of MnO. Phase purity of the synthesized samples was analyzed by X-ray diffraction technique. This spinet ceramics show efficient green emission in the range from 470 to 550 nm with a maximum at about 505 nm under UV or X-ray excitations, which is due to Mn2+ ions. MgGa2O4: Mn2+ exhibits intense thermoluminescence (TL) and optically stimulated luminescence (OSL) after influence of ionizing radiation. Are complex nature of the TL glow curves is associated with a significant number of structural defects that are responsible for the formation of shallow and deep electron traps. In this work, time-resolved OSL characteristics of the samples exposed to beta particles are reported for the first time. A light from green LED was used for optical stimulation. Obtained TL and OSL results suggest MgGa2O4:Mn2+ as perspective material for further research and possible application in radiation dosimetry.

Subject Keywords

Magnesium gallate MgGa2O4, Mn2+ ions, Photoluminescence, Thermoluminescence, Lifetime, Time-resolved optically stimulated luminescence

URI

https://hdl.handle.net/11511/48322

Journal

OPTICAL MATERIALS

DOI

https://doi.org/10.1016/j.optmat.2018.03.004

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Afterglow, TL and OSL properties of Mn2+-doped ZnGa2O4 phosphor Luchechko, Andriy; Zhydachevskyy, Yaroslav; Ubizskii, Sergii; Kravets, Oleh; Popov, Anatoli I.; Rogulis, Uldis; Elsts, Edgars; Bulur, Enver; Suchocki, Andrzej (Springer Science and Business Media LLC, 2019-07-02) Zinc gallate (ZnGa2O4) spinel ceramics doped with Mn2+ ions was prepared by a solid-state reaction at 1200 degrees C in air. Manganese concentration was equal to 0.05 mol.% of MnO with respect to ZnO. Ceramics produced in this way show an efficient green emission at about 505 nm under UV or X-ray excitations, which is caused by Mn2+ ions. This green emission is observed also as a relatively long afterglow (visible to the naked eye in the dark for about one hour) after switching-off the X-ray excitation. Tim...
Photo-transferred luminescence from BeO ceramics Bulur, Enver (2007-03-01) Temperature and radiation dose dependences of the thermoluminescence, photo-transferred luminescence signals from BeO ceramics were investigated using blue-green stimulation (420-550 nm). Several deep traps that act as sources for the photo-transferred luminescence signals, located in 400-625 degrees C region of the TL glow curve, were distinguished.
Dielectric property-microstructure relation in MgTiO3-CaTiO3 ceramics Ergin Örek, Merve; Öztürk, Abdullah; Department of Metallurgical and Materials Engineering (2019) A magnesium titanate - calcium titanate (MgTiO3-CaTiO3) dielectric ceramic with the mole percent composition of 95MgTiO3-5CaTiO3 (M0.95CT), was prepared from high purity powders of MgO, CaCO3, and TiO2 by conventional mixed-oxide route at various sintering temperatures ranging from 1200 to 1300 °C for 2, 4, and 6 h. The maximum densification and optimum dielectric properties were obtained for the M0.95CT ceramic sintered at 1250 °C for 4 h. The bulk density was 3.82 g/cm3 which corresponds to 97.5% of theor...
Raman Spectroscopy Investigation of Nano Hydroxyapatite Doped with Yttrium and Fluoride Ions Yilmaz, Bengi; Evis, Zafer (Informa UK Limited, 2014-01-02) In this study, nano hydroxyapatite doped with yttrium (2.5, 5, and 7.5mol%) and fluoride (2.5mol%) ions were synthesized by precipitation method and sintered at 900 degrees C, 1100 degrees C, and 1300 degrees C. Raman spectroscopy was applied to track the structural modifications in pure and doped hydroxyapatites. The results showed that the main characteristic band of pure hydroxyapatite at 963cm(-1) was not affected significantly by ion doping but exhibited higher intensity with increasing sintering tempe...
TL and OSL studies on gallium sulfide (GaS) single crystals Isik, M.; YÜKSEL, MEHMET; TOPAKSU, MUSTAFA; Hasanlı, Nızamı (Elsevier BV, 2020-09-01) Gallium sulfide (GaS) single crystals were investigated using thermoluminescence (TL) and optically stimulated luminescence (OSL) measurements. TL experiments performed in the room temperature (RT)-450 °C range presented a glow curve consisting in six single discrete peaks. Analyses of TL glow curve by computerized glow curve deconvolution method showed that the trapping centers responsible for peaks are located at 0.98, 1.09, 1.15, 1.76, 1.87 and 1.90 eV. The order of kinetics found between 1 and 2 indicat...

Citation Formats

A. LUCHECHKO, Y. ZHYDACHEVSKYY, D. MARABA, E. Bulur, S. UBİZSKİİ, and O. KRAVETS, “TL and OSL properties of Mn2+-doped MgGa2O4 phosphor,” OPTICAL MATERIALS, pp. 502–507, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48322.