Low temperature synthesis and structural characterization of nanocrystalline YAG prepared by a modified sol–gel method

Particle Growth of Y[sub 3]Al[sub 5]O[sub 12]:Tb[sup 3+] Phosphor in Sol-Gel Preparation

“…BET surface area of the sample prepared with optimized conditions ͑1400°C, 3 h͒ was measured as 2.91 m 2 /g and the calculated grain size is ϳ0.46 m. Luminescent properties.-As we know, Y 3 Al 5 O 12 :Tb 3+ is a well-studied and a widely used green phosphor. 5,7,8,10 Its green emissions are attributed to the transitions 5 D 4 → 7 F j of Tb 3+ . PL intensity and high-voltage CL intensity ͑ϳ10 kV͒ of Y 3 Al 5 O 12 :Tb 3+ prepared in this work with optimized condition are about 90-95% of the commercial sample.…”

“…Some new techniques were tried to prepare phosphors with small particle size and spherical shape, such as the spray pyrolysis method. 6,7 Sol-gel methods [8][9][10] were also reported to prepare phosphors at relatively low temperatures. These methods were considered as easier ways to control the morphology of the phosphors.…”

Lumino-magnetic YAG:Ce nanophosphors: novel synthesis routes for efficient luminescence and magnetic properties

“…It can be noticed that the resonance at 39.645 ppm can also be consistent with a tetrahedral site distorted due to the presence of oxygen defects. 31,[33][34][35] Mackenzie et al 33 suggested that the AlO 5 site could give rise to transient hexagonal YAlO 3 . In our sample, this process does not occur, as shown in XRD spectra where no diffraction peak associated with the perovskite structure was observed (Fig.…”

Aqueous Sol-Gel Synthesis Methods for the Preparation of Garnet Crystal Structure Compounds

“…Nanocrystalline YAG was synthesized by means of a modified glycolate sol-gel method in an aqueous media [16]. The monophasic YAG having the crystallites size of 26 nm was obtained at 800 °C.…”