Synthesis and photoluminescent properties of cuboid-like Y2(C2O4)3:Tb3+ green-emitting phosphors

Ye, Menglin; Zhou, Liqun; Hong, Fei; Li, Ling; Xia, Qinghua; Yang, Kun; Xiong, Xinbo

doi:10.1016/j.optmat.2015.05.012

Cited by 6 publications

(1 citation statement)

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“…Various Tb 3+ activated materials display a blue emission from the 5 D 3 level and a green emission from the 5 D 4 level. In the present work, the emission bands for Tb 3+ at 480 nm, 545 nm, 585 nm and 620 nm corresponding transitions are 5 D 4 → 7 F 6, 5 D 4 → 7 F 5 , 5 D 4 → 7 F 4 and 5 D 4 → 7 F 3 [37][38][39]. Visible luminescence of Tb 3+ was predominantly because of the transitions from 5 D 3 and 5 D 4 to 7 F J .…”

Section: Photoluminescence Analysissupporting

confidence: 49%

Microstructural and optical properties of rare earth ions doped TiO2 for potential white LED applications

Zikriya

Nadaf²,

Manjunath

et al. 2018

J Mater Sci: Mater Electron

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Nano ceramics of pure TiO 2 and Dy 3+ , Eu 3+ and Tb 3+ doped TiO 2 are prepared by hydrothermal method and these are characterized by using X-ray diffractometer (XRD), UV-Visible spectroscopy, field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), and photoluminescence spectroscopy. XRD analysis revealed that the average particle size of the pure TiO 2 and Dy 3+ , Eu 3+ and Tb 3+ doped TiO 2 are in the range of 45-35 nm and confirms the anatase phase. The FESEM and HRTEM analysis confirm that the obtained ceramics are in nano regime. The absorption spectrum revealed that the bandgap of the TiO 2 ceramics are in the range 3.14-3.2 eV. The PL analysis showed that the doping of Dy 3+ , Eu 3+ and Tb 3+ had improved the luminescence behavior than the pure TiO 2 nanoparticles. Overall, by doping 0.5 mol% concentration of rare earth (RE) greatly alters the structural morphology and directly influence the luminescence behavior of TiO 2 and suitable for advanced optoelectronic applications. The color purity of the studied samples is found to be 91% for Dy 3+ , 84% for Eu 3+ and 73% for Tb 3+ at the excitation of 345 nm, 376 nm and 350 nm respectively. The single-doped sample Eu 3+ : TiO 2 , Tb 3+ : TiO 2 and Dy 3+ : TiO 2 samples showed orange-red, blue-green and white emissions respectively.

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Section: Photoluminescence Analysissupporting

confidence: 49%