A simple approach to synthesis uniform 3D hollow yttrium oxide spheres using a hydrothermal scheme

Surface Morphology of Y2O3:Eu Thin Films at Different Activator Concentrations

“…In this regard, Y 2 O 3 :Eu 3 , a highly efficient phosphor emitting in the red region of the optical spectrum, is the most widely studied [1][2][3]. Due to the linear dependence of the glow brightness on the current density and excitation energy, the Y 2 O 3 :Eu phosphor is widely used as a red component of projection televisions, in the creation of flat vacuum fluorescent displays (VFDs) and field emission displays (FEDs) [4][5][6].…”

Morphology of Thin Films Y2O3:Eu Obtained by Different Methods

“…Among them, a special place is occupied by materials doped with rare-earth ions (REI), which are key elements of modern devices for generating, transmitting, and controlling optical signals. One of the most used REIs is europium Eu 3 , which is widely used in nuclear power, to generate laser radiation in the visible spectrum with a wavelength of 0.61 m, and Y 2 O 3 :Eu 3 is the most efficient phosphor emitting in the red spectrum [4][5][6]. The combination of small sizes of crystalline particles and the presence of dopants as luminescent centres, i.e., ions of rare-earth metals, provides high efficiency and stability of the luminescence of such materials, expanding their potential areas of application.…”

Effect of Activator Concentration on the Morphology of Thin Films of Y2O3:Eu Obtained by Radio-Frequency Sputtering

“…The combination of small sizes of crystalline particles and the presence of a dopant, a luminescent centre, and a Eu 3+ ion provide a uniform screen coating during the deposition of thin Y 2 O 3 :Eu 3+ films consisting of nanocrystalline grains. This improves the efficiency and stability of luminescence and the expansion of potential applications [4][5][6]. Taking into account that the luminescence efficiency in thin Y 2 O 3 :Eu 3 films is determined by the size, morphological, and structural characteristics of nanoparticles, we studied the effect of the concentration of the Eu 3 activator on these characteristics.…”