Afterglow, TL and OSL properties of Mn2+-doped ZnGa2O4 phosphor

Download

s41598-019-45869-7.pdf

Date

2019-07-02

Author

Luchechko, Andriy
Zhydachevskyy, Yaroslav
Ubizskii, Sergii
Kravets, Oleh
Popov, Anatoli I.
Rogulis, Uldis
Elsts, Edgars
Bulur, Enver
Suchocki, Andrzej

Metadata

Show full item record

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

Item Usage Stats

238
views

164
downloads

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. Time profiles of the beginning of glow and afterglow have been studied together with thermally stimulated (TSL) and optically stimulated (OSL) luminescence. Experimental results demonstrate a presence of few types of shallow and deep traps responsible for the observed afterglow and TSL/OSL emission of the material. The possibility of pulsed optical stimulation and time-resolved OSL characteristics of ZnGa2O4: Mn2+ has been reported for the first time. The presented results suggest the ZnGa2O4: Mn2+ spinel as a promising material for further fundamental research and possibility of application as a green long-lasting phosphor or storage phosphor for TSL/OSL radiation dosimetry.

Subject Keywords

Multidisciplinary

URI

https://hdl.handle.net/11511/41536

Journal

SCIENTIFIC REPORTS

DOI

https://doi.org/10.1038/s41598-019-45869-7

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Pressure Dependence of Molar Volume near the Melting Point in Benzene Yurtseven, Hasan Hamit (Tsinghua University Press, 2007-10-01) The pressure dependence of the molar volume was at constant temperatures close to the melting point in benzene. The molar volume of benzene was calculated using experimental data for the thermal expansivity for constant temperatures of 25°C, 28.5°C, 40°C, and 51°C at various pressures for both the solid and liquid phases. The predictions are in good agreement with the observed volumes in both the solid and liquid phases of benzene. The predicted values of the molar volume for a constant temperature of 28.5°...
Application of Electric Resistance Heating Method on Titanium Hot Forming at Industrial Scale Ozturk, Fahrettin; Ece, Remzi Ecmel; Polat, Naki; Koksal, Arif; Evis, Zafer; Sheikh-Ahmad, Jamal Y. (Springer Science and Business Media LLC, 2016-11-01) In this study, hot forming of DIN WL 3.7024 commercially pure titanium with a sheet thickness of 0.6 mm was performed by electric resistance heating. The sheet materials were heated at 600, 650, and 680 A degrees C and then hot formed with an industrial press. Grain size measurement and XRD analysis were performed for each forming temperature in order to investigate microstructure and phase changes. Results indicate that no microstructural changes have occurred at the mentioned temperature range. It was con...
TL and OSL properties of Mn2+-doped MgGa2O4 phosphor LUCHECHKO, ANDRİY; ZHYDACHEVSKYY, YAROSLAV; MARABA, DİREN; Bulur, Enver; UBİZSKİİ, SERGİY; KRAVETS, OLGA (2018-04-01) 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 stimula...
Optical and mechanical properties of fiber-reinforced ceramic matrix optically transparent composites Dericioğlu, Arcan Fehmi (2001-12-01) The idea of increasing the fracture resistance of optically transparent Ceramics by incorporation of continuous fibers with a small expense in their light transmission was applied to a SiC (SCS-6) fiber-reinforced magnesium aluminate spinel matrix composite. It was found that although there is a slight decrease in the light transmittance of the transparent monolithic matrix with increasing fiber volume fraction, a fail-safe mechanism appeared in the composite by the bridging effect of the intact fibers
High strength metallic wood from nanostructured nickel inverse opal materials Pikul, James H.; Özerinç, Sezer; Liu, Burigede; ZHANG, Runyu; BRAUN, Paul V.; Deshpande, Vikram S.; KING, William P. (Springer Science and Business Media LLC, 2019-01-24) This paper describes a nickel-based cellular material, which has the strength of titanium and the density of water. The material's strength arises from size-dependent strengthening of load-bearing nickel struts whose diameter is as small as 17 nm and whose 8 GPa yield strength exceeds that of bulk nickel by up to 4X. The mechanical properties of this material can be controlled by varying the nanometer-scale geometry, with strength varying over the range 90-880 MPa, modulus varying over the range 14-116 GPa,...

Citation Formats

A. Luchechko et al., “Afterglow, TL and OSL properties of Mn2+-doped ZnGa2O4 phosphor,” SCIENTIFIC REPORTS, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41536.