SrAl2O4: Eu2+, Dy3+ phosphors derived from a new sol–gel route

Operation by Eu luminescence in CaAl2O4:Eu2+ alloys by Zn substitution

“…With the development of scientific technologies on materials, several chemical synthesis techniques, such as co-precipitation [3], sol-gel [4][5][6], microwave [7], Pechini [8] and combustion [9][10][11] synthesis methods have been applied to prepare rare earth ions activation alkaline earth aluminate and/or its phosphors. All of these methods were conducted in liquid phases so that each component can be accurately controlled and uniformly mixed.…”

Structure and luminescence properties of SrAl2O4:Eu2+, Dy3+ by Ba2+ and Ca2+ co-doping

“…One of the typical rare earth ions doping in alkaline earth aluminates is SrAl 2 O 4 :Eu 2+ , Dy 3+ , which was successfully synthesized by Matsuzawa in 1996 [8]. After that, many researchers have done a lot of works about SrAl 2 O 4 :Eu 2+ ,Dy 3+ because of its high luminescent intensity and long-lasting time [1,4,7,[9][10][11]. Chang et al reported the effect of B 2 O 3 addition on the formation of SrAl 2 O 4 : Eu 2+ ,Dy 3+ phosphor [4].…”

“…Liu and co-workers investigated the structural, electronic, lattice dynamical, and dielectric properties of SrAl 2 O 4 within density-function theory [12]. SrAl 2 O 4 : Eu 2+ ,Dy 3+ emits a green light peaking at about 520 nm and shows the long afterglow properties [1,[7][8][9][10][11]. It is generally agreed that the Eu 2+ ions act as luminescence centers in SrAl 2 O 4 : Eu 2+ ,Dy 3+ , and the field strength of the Eu 2+ surroundings determines the peak positions on the emission spectra [1,7,10,11].…”

“…SrAl 2 O 4 : Eu 2+ ,Dy 3+ emits a green light peaking at about 520 nm and shows the long afterglow properties [1,[7][8][9][10][11]. It is generally agreed that the Eu 2+ ions act as luminescence centers in SrAl 2 O 4 : Eu 2+ ,Dy 3+ , and the field strength of the Eu 2+ surroundings determines the peak positions on the emission spectra [1,7,10,11]. Consequently, Eu 2+ ions can emit light with varied color in different crystal fields [7,11,13,14].…”

Synthesis of the long‐persistence phosphor CaAl2O4:Eu2+, Dy3+, Nd3+ by combustion method and its luminescent properties

“…Recently, alkaline earth aluminate phosphor-doped Eu 2+ with strong photoluminescence in the blue-green visible region have been studied extensively. Compared with other phosphors reported in the literature, [3][4][5][6] in this paper the as-prepared phosphor is added to Eu 2+ , Dy 3+ and Nd 3+ together, which can improve its luminescent properties. The synthetical method also has the merits of low temperature, low cost and time saving.…”