Synthesis and photoluminescence of Y,Eu co-doped ZnO red phosphor

Synthesis and role of co-dopants (alkaline earth divalents and halides) on the photoluminescence of Eu2+ doped BaAl2O4 phosphor

“…It shows that the effective role of ionic radii of co-doped divalent ions on PL intensity of the phosphor. Change in PL intensity of phosphors while co-doping with other ion is reported in earlier reports [27][28][29][30].…”

“…Co-doping of alkaline earth divalent cations such as Ca, Sr, Mg and Zn in BaAl2O4:Eu 2+ phosphor could influence the PL properties of the phosphor [27][28]. Thus, a series of divalent cations have been utilized to improve the PL intensity of BaAl2O4:(8mol%)Eu 2+ phosphor.…”

Characterization of Eu doped ZnO micropods prepared by chemical bath deposition on p-Si substrate

“…The intense emission peak was around 616 nm, and it was only observed for doped micropods as grown around 615 nm. In addition, the substitution of Zn by divalent Eu 2+ , whose energy level is located 0.19 eV below the conduction band [54] can also give an emission around 2.95 eV (420 nm) [54]. As seen in Figure 11, the incorporation of Eu into ZnO micropods induces an asymmetric widening of the visible band with a small shift towards higher wavelengths.…”

Luminescence Properties of ZnO:Eu³⁺ Red Emitting Phosphor Prepared by Precipitation Method

“…Zinc oxide (ZnO) has attracted much attention because that it exhibits a unique combination of interesting piezoelectric, electrical, optical and thermal properties compared to other compound semiconductors [1]. It is a good candidate for host materials of rare earth element doped and optical properties have been studied by photoluminescence spectroscopy [2][3][4].…”

“…Europium doped materials have been investigated because it show bright red luminescence and laser action in a variety of different of glasses and single crystals [5]. In recent years, many techniques have been employed to synthesize high quality Europium-doped ZnO red emitting phosphors, including solid state reaction method [6], hydrothermal method [7], pyrolysis method [1], sol-gel method [8], etc. Phosphors were usually synthesized by conventional high temperature solid state reaction, the calcining temperature was over 1000°C for10 hours.…”