Sol-gel assisted molten-salt synthesis of novel single phase Y3–2xCa2xTaxAl5−xO12:1%Eu garnet structure phosphors

Ionic selective occupation, lattice modulation and photoluminescence properties of garnet typed orange-yellow phosphors for white-light-emitting diodes

“…S2 shows that the purity phase is verified by powder XRD for the samples of YSAS. All diffraction peaks are sharp and intense, and match well with the standard PDF card No.88-2048 of Y3Al5O12, belonging to the cubic crystal system, Ia3d space group [16,17] . dodecahedrons.…”

Atomic layer deposition of Er-doped yttrium aluminum gallium garnet nanofilms with tunable crystallization and electroluminescence properties

“…35 This difference in the crystalline properties should be correlated to the Al 3+ and Ga 3+ ions within the co-alloying garnet that occupy the corresponding octahedral and tetrahedral lattice sites in certain ratios. 36…”

“…35 This difference in the crystalline properties should be correlated to the Al 3+ and Ga 3+ ions within the co-alloying garnet that occupy the corresponding octahedral and tetrahedral lattice sites in certain ratios. 36 According to the Pauling coordination polyhedron rule, 37,38 the relative size of the positive and negative ions directly affects the crystal mode and the coordination polyhedron formation of these ions. Since the radius ratio R Al 3+/R O 2− = 0.382 locates in the range of 0.225-0.414, the Al-O polyhedron prefers to form tetrahedral coordination, while Ga-O forms octahedral coordination because the R Ga 3+/R O 2− = 0.443 locates within 0.414-0.732.…”

Enhanced Optical Properties of Yttrium Aluminum Garnet with the Yttrium Vanadate Impurity Phase

“…The detailed steps of the synthesis route and annealing temperature followed the previously reported synthesis procedure [11]. The simplified scheme of the sol-gel technique is presented in the illustration below.…”