Synthesis and characterization of the crystalline powders on the basis of Lu2O3:Eu3+spherical submicron-sized particles

Fabrication and characterization of Lu2O3:Eu3+ nanopowders and X-ray films

“…1 shows the SEM picture of Lu 2 O 3 :Eu 3+ powders prepared with OA, AHC and urea as precipitants. All powders were calcined at T = 1200 • C in order to obtain the highest luminescence yield [18]. The temperature of 1200 • C was chosen because it is the upper limit of morphological stability of AHC and urea-precipitated Lu 2 O 3 :Eu 3+ powders.…”

“…The particle size determined by SEM is of about 100 nm. The optimization of homogeneous precipitation conditions [18] allows one to obtain near-monodisperse Lu 2 O 3 :Eu 3+ crystalline spheres (10% of standard deviation in size distribution) of 100 nm in diameter (Fig. 1c).…”

“…These nanopowders can be more easily consolidated in 2D close-packed structures, and provide improved scintillation characteristics in comparison with films prepared from powders with undefined morphology. Despite a number of methods were employed to synthesize nanocrystalline Lu 2 O 3 :Eu 3+ phosphors [18][19][20][21][22][23], to our best knowledge there are no reports on Lu 2 O 3 :Eu 3+ X-ray screens prepared using nanocrystalline powders. This work presents results on fabrication and characterization of Lu 2 O 3 :Eu 3+ close-packed films based on nanopowders obtained by different wet chemical methods.…”

Preparation and structural properties of Lu2O3:Eu3+ submicrometer spherical phosphors

“…Lu 2 O 3 :Eu 3+ was obtained and studied in different forms such as powders (including nanocrystalline), sol-gel films and transparent ceramics [20,21]. Preparation, morphology and structure features of the Lu 2 O 3 :Eu 3+ spherical particles has not been properly described yet [22]. Lu 2 O 3 :Eu 3+ in the form of the nanoshells on SiO 2 spheres was prepared by us earlier for the creation of the spherical and size controlled phosphors [9].…”

Characterization of rare-earth doped Lu2O3 nanopowders prepared with polymer complex solution synthesis

“…To overcome these problems, wet chemical processes such as hydrothermal synthesis [5], co-precipitation [6][7][8] and sol-gel [9] have been used as common synthesis methods for rare-earth doped lutetia. However, these chemical methods involve complicated steps, such as precise control of pH and precipitation, in order to obtain the correct stoichiometric compound.…”