Enhanced the Cu2+ doping on the structural, optical and electrical properties of zinc oxide (ZnO) nanoparticles for electronic device applications

Impact of Cobalt Doping on the Structural, Optical, and Dielectric Properties of MgAl2O4 Spinel Material

“…Figure b shows the peaks shifting toward lower Bragg’s angle because the ionic radius of the dopant material (Co 2+ ) is larger than that of the host material (Mg 2+ ) . The Sheerer equation is used to determine the average crystallite size of samples, as shown in eq . , normalA normalv normale normalr normala normalg normale .25em normalc normalr normaly normals normalt normala normall normall normali normalt normale .25em normals normali normalz normale .25em ( D ) = K λ β h k l cos nobreak0em.25em⁡ θ …”

“…Figure b shows the peaks shifting toward lower Bragg’s angle because the ionic radius of the dopant material (Co 2+ ) is larger than that of the host material (Mg 2+ ) . The Sheerer equation is used to determine the average crystallite size of samples, as shown in eq . , …”

“…However, some large grains may be grown due to the agglomeration of the smaller grains. , The shape of the cobalt-doped magnesium aluminate changes into a disc with increasing Co 2+ contents from 0.06 to 0.09, as shown in Figure d …”

“…However, some large grains may be grown due to the agglomeration of the smaller grains. 24,32 The shape of the cobalt-doped magnesium aluminate changes into a disc with increasing Co 2+ contents from 0.06 to 0.09, as shown in Figure 2d. 33 The elemental composition of each sample is analyzed by using the energy-dispersive X-ray spectroscopy (EDX) technique.…”

Highly efficient green-emitting ZnO:Cu2+ phosphors for NUV-pumped white-emitting diodes

“…[14][15][16]18,20,21 Among them, Cu 2+ ions (0.73 Å), with an ionic radius close to that of Zn 2+ ions (0.74 Å), could be an excellent candidate due to the feasible substitution of Cu 2+ ions for Zn 2+ ions. 24 ZnO:Cu 2+ crystals 25 and ZnO:Cu 2+ nanoparticles 26,27 could be synthesized by various methods, including chemical vapor transport, co-precipitation and chemical routes. Although the green emission of ZnO: Cu 2+ material is promising for the fabrication of WLEDs based on NUV-LED chips, 27 there is a lack of research on its fundamental spectroscopic properties.…”