ZnO doping and properties

Zinc oxide is a wide-bandgap semiconductor whose electrical and optical behavior can be precisely tuned by introducing small concentrations of foreign atoms—a process called doping—making it a versatile platform for devices that detect light, emit it, or conduct electricity with high transparency. Researchers study how dopants like aluminum, gallium, or transition metals alter ZnO's carrier density, crystal structure, and surface chemistry, particularly at the nanoscale, where wires and rods just tens of nanometers across behave quite differently from bulk material. One active frontier is whether certain dopants, especially manganese or cobalt, can induce stable ferromagnetism in ZnO at room temperature, which would open a path toward spintronic devices that exploit both charge and magnetic spin. A parallel challenge is understanding the defect chemistry that governs conductivity and luminescence in doped ZnO nanostructures well enough to produce reliable, reproducible photodetectors and optoelectronic components.

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Keywords

Zinc OxideNanostructuresSemiconductorsFerromagnetismNanowiresPhotodetectors