The trap states in the Sr2MgSi2O7 and (Sr,Ca)MgSi2O7 long afterglow phosphor activated by Eu2+ and Dy3+

Photoluminescence properties of Eu3+:MgAl2O4 powder phosphor

“…The emission from Eu ion is highly efficient and its emission wavelength is strongly dependent on the host lattice so that we can get different colors from blue to red [25][26][27]. However in most hosts, the luminescence of Eu occurs in blue and red regions.…”

Photoluminescence properties of Ba2ZnSi2O7:Eu2+, Re3+ (Re=Dy, Nd) long lasting phosphors prepared by the combustion-assisted synthesis method

“…Compared with the conventional sulphide materials, alkaline earth silicates long afterglow phosphors yield much better characteristics, such as a longer duration of time of the phosphorescence, brighter luminosity, improved chemical and physical stability, especially an excellent water-resistant property [3][4][5][6]. For those phosphors, the phosphorescence is ascribed to the parity-allowed electronic transition of 4f 6 5d 1 -8 S 7/2 of the Eu 2+ ion, which is strongly influenced by the host lattice.…”

Synthesis of Sr2MgSi2O7:Eu, Dy and Sr2MgSi2O7:Eu, Dy, Nd by a modified solid-state reaction and their luminescent properties

“…Compared with previously developed aluminate materials, the silicate phosphors have advantages on chemical stability, heat stability, and lower cost [1,2]. The emission of Eu ion is highly efficient and its emission wavelength is strongly dependent on the host lattice so that we can get different color from blue to red in theory [3][4][5]. However, in most hosts, the luminescence of Eu 2+ occurs in blue and green regions.…”