Structure and optical properties of ZnO/Zn2SiO4 composite thin films containing Eu3+ ions

Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

“…This is due to the enhancement of the crystal quality in the material [59]. color [21]. This can be discovered from FESEM images, where no Eu 3+ structure can be seen in the images regardless of the concentration of Eu 3+ , which shows that Eu 3+ has been incorporated into both crystals sites.…”

“…Essentially, both figures show the same pattern where, the spectrum display absorption peaks at 462, 500, 580, 620, 700, 802, 884, 989, 1002, and 1100 cm −1 . The absorption peak at a wavenumber of 462, 500, and 580 cm −1 indicated the symmetric stretching vibration of the ZnO4 group [21,38,41,45]. Absorption peaks present at 620 and 700 cm −1 ascribed to the ZnO4 asymmetric stretching and SiO torsional vibrations whereas peaks at 812 and 884 cm −1 were assigned to the SiO4 symmetric stretching vibration [ • are low and can almost be neglected.…”

“…The absorption peak at a wavenumber of 462, 500, and 580 cm −1 indicated the symmetric stretching vibration of the ZnO 4 group [21,38,41,45]. Absorption peaks present at 620 and 700 cm −1 ascribed to the ZnO 4 asymmetric stretching and SiO torsional vibrations whereas peaks at 812 and 884 cm −1 were assigned to the SiO 4 symmetric stretching vibration [21,38,41,42,45,46]. The absorption peak around 989 cm −1 was assigned to the SiO 4 asymmetric stretching vibration [15,45,47].…”

“…The solid-state reaction had been used to fabricate ZnO/Zn 2 SiO 4 [20] with the fabricated sample showed broader visible range emissions compared to Zn 2 SiO 4 and ZnO. Fabrication of ZnO/Zn 2 SiO 4 doped Eu 3+ by sol-gel spin coating technique has also been reported [21]. PL study showed that the highest emission spectra obtained is around 610 nm which is at the red region due to the existence of Eu 3+ ions in the sample and the emission intensity increased with the increment of calcination temperature.…”

Blue and green emission from Ho3+ doped zinc titanate phosphor thin films by sol-gel

“…Then, this solution was added drop-wisely in the first one and stirred for another 2 h at room temperature. Zinc precursor solution was prepared as in our pervious work [29], stoichiometry amount of zinc acetate dihydrate was dissolved in ethylene glycol monomethyl ether (0.404 mol) under vigorous stirring at room temperature for 30 min During stirring, ethanolamine (0.025 mol) was added as stabilizer in a molar ratio 1:1. In order to obtained solution with concentration of 0.75 M, the solution was stirred for extra 1 h at 60°C.…”