ZnGa2O4 as host material for multicolor-emitting phosphor layer of electroluminescent devices

EPR and photoluminescence properties of Mn2+-activated zinc gallate phosphor prepared by urea combustion route and post heat treatment

“…ZnGa 2 O 4 is considered as a promising phosphor material and it shows emission from green to red when it is doped with Mn and Cr ions, and also even without being doped with impurity ZnGa 2 O 4 shows a blue emission band around 430 nm when it is synthesized in an oxidizing ambient, whereas it shows an ultraviolet emission band around 360 nm when it is annealed in a reducing ambient [13][14][15]. Minami et al [16] reported that white luminescence could be achieved from ZnGa 2 O 4 by doping with Mn 2 þ , Eu 3 þ and Ce 3 þ . ZnGa 2 O 4 is a binary compound oxide consisting of ZnO and Ga 2 O 3 which crystallizes in spinel structure and its optical band gap is about 4.4 eV.…”

Synthesis and properties of colloidal ternary ZnGa2O4:Eu3+ nanocrystals

“…Luminescent zinc gallate (ZnGa 2 O 4 ) micron-sized powders and films have attracted a great deal of attention due to its potential applications in field emission displays and electroluminescent devices [15,16]. In principle, an oxide should show better chemical stability versus competing sulfide phosphors (e.g., ZnS:Cu,Cl), especially at high electron beam currents [17].…”

“…ZnGa 2 O 4 crystallizes as a cubic spinel with a large band gap of $4.4 eV, and exhibits an intense green emission when doped with Mn and blue luminescence without doping via a self-activated center [18]. It has been suggested that white luminescence could be achieved from ZnGa 2 O 4 by doping with Mn 2+ (green), Eu 3+ (red), and Ce 3+ (blue) [15]. A typical synthesis to prepare ternary ZnGa 2 O 4 :Eu 3+ nanocrystals was as follows.…”

Mg1.96−1.96xZn1.96xGeO4:Mn0.04 phosphors for electroluminescent display applications

“…They exhibit extreme stability in vacuum and emit fewer harmful gases under irradiation of electrons in comparison to conventional sulphide phosphors. Several oxide phosphor hosts like Y 2 O 3 [5], ZnGa 2 O 4 [6][7][8][9][10][11][12][13][14], Zn 2 GeO 4 [15][16][17][18], etc. have been investigated for full colour electroluminescent devices.…”