Effect of Tl doping on optical, TSL and OSL properties of Tl-doped RbBr transparent ceramics synthesized by SPS

Optically stimulated luminescence properties of Tl-doped NH4Cl transparent ceramics fabricated by SPS method

“…The intensity ratio of the emission peak at 530 nm to the one at 380 nm increased with increasing Tl concentrations. The excitation and emission wavelengths of these two peaks agreed with those in previous reports of Tl-doped halide phosphors [45][46][47]; therefore, the emissions at 380 and 530 nm were attributed to the 3 P 1 → 1 S 0 transitions of Tl + and the off-center self-trapped excitons (STEs) near Tl + , respectively. The Tl-undoped sample exhibited no emission peaks in the emission map.…”

“…On the other hand, the latter QY increased with increasing Tl concentrations. These behaviors were also observed in the other Tl-doped materials [45,47,48]. Figure 5 shows the PL decay time profiles of the Tldoped NH 4 Cl samples where the excitation and the monitored wavelengths are 280 and 530 nm, respectively.…”

“…The obtained decay time constants are shown in Table 2. Compared with the PL decay (Figure 5) and previous reports, the third and fourth decay components were attributed to the 3 P 1 → 1 S 0 transitions of Tl + and the off-center STEs near Tl + , respectively [46,47].…”

Development of In-doped RbBr Transparent Ceramics with Optically Stimulated Luminescence Properties

“…In-doped RbBr samples were prepared in the same way as in our previous report. (21) RbBr (> 99%, Mitsuwa Chemical) and InBr (99.99%, Kojundo Chemical) were used as raw powders. After sintering, the wide surfaces of the obtained samples were mechanically polished using various sandpapers (600-3000 grits).…”

Development of mixed halide translucent ceramics for imaging plates

“…Here, the readout of the OSL signals was performed by an original setup. 25,91) In the Eu-doped Cs(Cl 0.5 , Br 0.5 ) translucent ceramic, the 10.0 lp mm −1 lines (50 μm per line) can be resolved. The spatial resolution of translucent ceramic was comparable to that of commercial IPs.…”