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

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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

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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.