[en] Self-assembled, one dimensional (1-D) Zn1−xCdxS nanostructures with a Cd composition of x = 0.11 have been successfully fabricated on indium-tin-oxide/glass substrates by using a coevaporation method in the absence of any catalyst. The structures and the morphologies of these nanostructures were studied using X-ray diffraction and high-resolution transmission electron microscopy. X-ray photoelectron spectroscopy confirmed that the Cd ions occupied the Zn sites in the ZnCdS nanowire. The fabricated ZnCdS nanostructures exhibited various shapes, such as hexagonal nanorods (H-NRs), cylindrical nanorods (C-NRs), nanoneedles (NNs), nanowires (NWs) and nanodumbbells (NDs), for different substrate temperatures. Increasing the substrate temperature resulted in the formation of nanostructures with smaller diameters. The shape-controllable growth of ZnCdS 1-D nanostructures might result in the development of a high-efficiency nano-solar cell.

[en] The magnetic properties of a ZnMnO diluted magnetic semiconductor isovalently doped with Mg and S have been successfully studied. ZnMnO alloys were prepared with different concentrations of magnesium and sulfur by using ultrasonic spray pyrolysis technique; additionally, the films were doped for free charge carriers by using nitrogen. For ZnMnO doped with 5% of Mg, the Curie temperature reached 104 K, and second-phase magnetic precipitates were observed with increasing Mg concentration. On the other hand, the sulfur doped ZnMnO showed an increased Curie temperature higher than room temperature due to increased number of holes which mediated the magnetic exchange interaction between magnetic ions.