Splitting and broadening of the emission bands of Y2O3:Eu3+,Nd3+ and its dependence on Nd3+ concentration and annealing temperature

Unconventional Production of Bright White Light Emission by Nd-Doped and Nominally Un-Doped <inline-formula> <tex-math notation="TeX">$\hbox{Y}_{2}\hbox{O}_{3}$</tex-math></inline-formula> Nano-Powders

“…Notably, as the Nd 3þ concentration increases from 2% to 10%, the prominent diffraction peaks become sharper and more intense thus suggesting a refinement of the sample crystallinity and/or increased nano-powder sizes. One would expect that an increase of the Nd 3þ ion concentration would lead to peaks with slightly broader width and reduced intensity, but the observed results agree with report according to which a Nd 3þ dopant may act as an heterogeneous nucleation and crystallization site [22] and improve the sample crystallinity. On the other hand, doping-induced microstrain and local distortion of the host lattice structure due to the difference in the ionic radii between the Y host cation (0.9 Å) and Nd 3þ dopant (0.980 Å) are expected effects because of the relevant doping level of our samples.…”

Ternary mesoporous WO3/Mn3O4/N-doped graphene nanocomposite for enhanced photocatalysis under visible light irradiation

“…[12][13][14][15] Several research groups discovered that the mesoporous WO 3 with large surface area and ordered channels demonstrated superior photocatalytic activity under visible light irradiation. [16][17][18][19] Nevertheless, the mesoporous WO 3 still needs further perfection for its practical application. Hausmannite IJMn 3 O 4 ) is a p-type semiconductor and is often used as a co-catalyst to promote the performance of the photocatalyst.…”

Remarkable modulation effects of Ag+ ion on fluorescence of Eu3+ ion doped yttrium phosphate nanophosphors

“…Based on the crystal lattice distortion, it can be inferred that the doping of Ag + ion will lead to the expansion and the generation of the tension of YPO 4 crystal lattices. As a result, the energy level splitting of the Eu 3+ ion will be changed due to the corresponding variation of the crystal field symmetry of Eu 3+ sites, which lead to the shift of the Eu 3+ -O 2À absorption band [23]. Furthermore, the variation of the charge environment of Eu 3+ site should also be taken into account since the charge centers will change due to the substituting of Eu 3+ ions by Ag + ions.…”