The Reduction and Luminescence Characteristics of Sm2+ Doped in Ba3BP3O12 Crystal

Abstract

Sm2+ ions doped in Ba3BP3O12 polycrystalline samples were obtained by heating the materials in a reducing atmosphere and X‐ray irradiation reduction method. The phase formations of the samples were investigated by X‐ray powder diffraction measurements. The temperature‐dependent emission spectra and luminescence decay curves of Sm2+ ions reduced by the two methods were investigated at various temperatures (10–300 K). The crystallographic site distributions and the thermal quenching of 5D0→7F0 luminescence transition of Sm2+ ions in the two samples have different characteristics. The photostabilities of the Sm2+ ions were evaluated with the photobleaching method by monitoring the 5D0→7F0 luminescence transition under the excitation of 488 nm of Ar+ laser. The luminescence and reduction mechanism of Sm3+→Sm2+ were discussed. The luminescence properties and stabilities of the Sm2+ ions are highly dependent on the sample preparation conditions.

Luminescence and decay behavior of divalent europium activated barium borophosphate polycrystalline ceramics in the temperature regime 10–525K

“…For the larger site the average Ba-O distance is 2.848 Å; while the smaller site the average Ba-O distance is 2.775 Å. The luminescence properties of Sm 2 þ , Sm 3 þ , Eu 3 þ , Gd 3 þ , Tb 3 þ and Ce 3 þ doped Ba 3 BP 3 O 12 have been reported in the literatures [16][17][18]. The scintillation properties of Eu 2 þ doped Ba 3 BP 3 O 12 single crystal and powder samples have been investigated under X-ray excitation by Zhang and Duan [19,20].…”

Samarium‐Doped Oxyfluoride Glass‐Ceramic as a New Fast Erasable Dosimetric Detector Material for Microbeam Radiation Cancer Therapy Applications at the Canadian Synchrotron

“…Here, the dose profile of the X‐ray beam is recorded on the detector plate as an extent of Sm‐valence reduction, and then the recorded dose information is read out by confocal microscopy via the photoluminescence (PL) signal of Sm ions. Potential dosimeter materials are clearly those that allow the Sm 3+ →Sm 2+ reduction to occur under irradiation; examples of irradiation include X‐rays, gamma‐rays, and intense infrared femtosecond laser . Among those materials, we have tested several Sm‐doped crystals, glass‐ceramics, and glasses including Sm‐doped fluorophosphate (FP) and fluoroaluminate (FA) glasses .…”