Ba3Si6O12N2:Eu2+ and Ba3Si6O9N4:Eu2+ have strikingly similar atomistic structures, but the former is an efficient green phosphor at working temperature while the latter is a bluish-green phosphor whose luminescence decreases quite fast with temperature. Aiming at the understanding of such different behavior, we compute the quasiparticle electronic band structure of the two hosts, Ba3Si6O12N2 and Ba3Si6O9N4, thanks to many-body perturbation theory in the G0W0 approximation. The gap differs by about 0.43 eV.We analyze the eigenfunctions at the top of the valence band, at the bottom of the conduction band, and also the chemical shifts for the Ba site in the two hosts. The valence bands, directly impacted by the different stoichiometric ratio, ...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The Ba-Si-O-N (BSON) system appear to be a promising host for white LED phosphors. We study two chem...
The Ba-Si-O-N (BSON) system appear to be a promising host for white LED phosphors. We study two chem...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Two europium-doped barium-silicate oxynitrides (BSON), which are used as blue-green/green coating fo...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Understanding the physical mechanisms behind thermal effects in phosphors is crucial for white light...
The crystal structure and the photoluminescence properties of novel green Ba4-yEuySi6O16-3x/2Nx phos...
[[abstract]]The photoluminescence properties are sensitive to the cations of the host lattice in man...
The efficient green phosphor Ba(3)Si(6)O(12)N(2):Eu(2+) and its solid-solution series Ba(3-x)Sr(x)Si...
Powder samples of Ba3Si6O12N2 and Ba3Si6O6N4 were synthesized by solid state reaction method at 1300...
Synthesizing pure phase Ba3Si6O9N4 by the conventional solid-state reaction method is challenging be...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The Ba-Si-O-N (BSON) system appear to be a promising host for white LED phosphors. We study two chem...
The Ba-Si-O-N (BSON) system appear to be a promising host for white LED phosphors. We study two chem...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Two europium-doped barium-silicate oxynitrides (BSON), which are used as blue-green/green coating fo...
Phosphors with optimized luminescence properties for white-LEDs applications are the subject of very...
Understanding the physical mechanisms behind thermal effects in phosphors is crucial for white light...
The crystal structure and the photoluminescence properties of novel green Ba4-yEuySi6O16-3x/2Nx phos...
[[abstract]]The photoluminescence properties are sensitive to the cations of the host lattice in man...
The efficient green phosphor Ba(3)Si(6)O(12)N(2):Eu(2+) and its solid-solution series Ba(3-x)Sr(x)Si...
Powder samples of Ba3Si6O12N2 and Ba3Si6O6N4 were synthesized by solid state reaction method at 1300...
Synthesizing pure phase Ba3Si6O9N4 by the conventional solid-state reaction method is challenging be...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...
The luminescence properties of Eu2+-activated alk.-earth Si-oxynitrides were studied. In the BaO-SiO...