Nanophosphors for radiation dosimetry

Luminescence study of Sm3+,Eu3+‐doped Y2Zr2O7 host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

“…[ 29 ] Crystal structure and phase parameters for YZO phosphors were determined using Rietveld refinement and FullProf suite software and are displayed in Figure 2. [ 5,30–33 ] The consistency factors are R wp = 18.21, R p = 10.36, R exp = 13.93, and χ 2 = 3.21 which are within well acceptable limits. The refinement analysis verified that the YZO phosphor had a cubic structure and belonged to the Fd3m space group (a = b = c = 10.33500 Å, and α = β = γ = 90.00°).…”

“…As petroleum products are developing in a frightening way and environmental changes are harsh, [ 1,2 ] the best suitable approach is to ensure that energy extremes and the global warming risk are decreased. [ 3 ] White light‐emitting diodes (WLEDs) produce ~70% energy saving when compared with commonly used incandescent lamps, [ 4,5 ] because of their relative high effectiveness and long lifetime. In the last few years, huge advances have been made in the fabrication of commercial WLEDs by the combination of ultraviolet (UV) or blue semiconducting chips with phosphors.…”

Luminescence investigation of Sm3+,Eu2+‐activated/co‐activated Ba2AlB4O7Cl phosphors: novel red to blue colour tuning in chloroborates

“…[ 28,29 ] The given morphology revealed that the phosphor might be a potential candidate for WLEDs and display devices. [ 30 ]…”

“…Peaks observed at 599 nm and 648 nm were due to the electric dipole transition 4 G 5/2 → 6 H 7/2 and the 4 G 5/2 → 6 H 9/2 transition of Sm 3+ ions, respectively. [ 30,33 ] The PL emission spectra of Eu 2+ /Sm 3+ ‐co‐activated Ba 2 AlB 4 O 7 Cl phosphors are displayed in Figure 12. The mechanism behind the energy transfer is displayed in Figure 13.…”