Spherical and rod-like Gd 2 O 3 :Eu 3 +  nanophosphors—Structural and luminescent properties

Abstract

nanophosphors by hydrothermal method are promising for high performance display materials. The variation in optical energy bandgap (E g ) was noticed in as-formed and heat treated systems in both the techniques. This is due to more ordered structure in heat treated samples and reduction in structural defects.

Morphological and photoluminescence study of NaSrB5O9: Tb3+nanocrystalline phosphor

“…where βr is the total peak broadening, θ is the Bragg's angle and η is the strain distribution within the material [32][33][34]. β r cos θ is now plotted on the Y-axis and 4sin θ on the X-axis giving slope η and Y intercept Kλ/T.…”

Rapid microwave-assisted synthesis of PVP-coated ultrasmall gadolinium oxide nanoparticles for magnetic resonance imaging

“…Stretching vibration of Gd-O bond appears with the characteristic peak in the range 400-540 cm -1 . 31 The amide (C=O) absorption peak is strongly shifted to lower wavenumber when compared to pure PVP (by more than 60 cm -1 ) that evidenced PVP polymer grafted successfully at the surface of Gd 2 O 3 NPs. The PVP-coated Gd 2 O 3 NPs also shows the two intense peaks at 3415 and 2928 cm -1 corresponding to O-H and C-H stretch, respectively.…”

Gd2O3:SiO2 Nanocomposite: Study on Structural and Optical Behavior

“…The sample further annealed at 1173 K (6 h) illustrates increased intensity of the earlier diffraction peaks along with appearance of many new weak peaks at 2θ ~ 20.04°, 28.72°, 33.29°, 47.71°, and 56.64° which correspond to (211), (222), (400), (440), and (622) reflection planes, respectively (JCPDS file no. 43‐1014), owing to the evolution of the complete cubic phase of Gd 2 O 3 . Further, one may notice that the diffraction peak becomes sharp as the annealing temperature is increased from 773 K to 1173 K which infers the growth of the crystallite size.…”