Synthesis and luminescent properties of CaLa2ZnO5:Ln (Ln:Tm3+ or Er3+) phosphors

RE3+ (RE3+ = Tm3+, Tb3+ and Sm3+) ions activated Y6WO12 phosphors: Synthesis, photoluminescence, cathodoluminescence and thermal stability

“…5a, sharp peaks were observed in the wavelength range of 450e500 nm when excited at a wavelength of 312 nm. The strong blue emission of Tm 3þ ions is due to the 1 D 2 / 3 F 4 electronic transition observed at 454 nm and other weak emission peak ( 1 G 4 / 3 H 6 ) is observed due to the residual multi-phonon non-radiative relaxation from the 1 D 2 levels [26]. The weak emission peak at 535 nm is due to the 1 I 6 / 3 F 2 electronic transition, but it cannot be assigned to the 1 D 2 / 5 H 3 electronic transition for the reason that the intensity behavior is different from the 1 D 2 / 3 F 4 (454 nm) emission band.…”

Crystal growth, luminescence, and scintillation properties of Er-doped La2Hf2O7 single crystal

“…The decay time was almost the same as that of Er 3+ -doped phosphor in a previous report. [41][42][43] This indicates that the emission may be attributed to the Er 3+ ion.…”

Tunable emissions via the white region from Sr2Gd8(SiO4)6O2:RE3+ (RE3+: Dy3+, Tm3+, Eu3+) phosphors

“…7 Firstly, the stability of these sulfur-based phosphors is low, and they are frequently degraded under high energy electron bombardment because of cation-sulfur bond separation. 3,[8][9][10] Secondly, these phosphors are not eco-friendly, and their decomposition process produces harmful sulfur-bearing gases which pollute emission tips and reduce the device lifetime. 3,10 In order to develop the working capability of FED devices, it is essential to search for novel phosphors with improved luminescence efficiency, superior chromaticity, better chemical stability and eco-friendly nature.…”