Synthesis and photoluminescence properties of washboard belt-like ZnSe nanostructures

Washboard belt-like zinc selenide(ZnSe)nanostructures are successfully prepared by a simple chemical vapor deposition(CVD)technology without catalyst.The phase compositions,morphologies and optical properties of the nanostructures are investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM)and photoluminescence(PL)spectroscop,respectively.A vapor-liquid mechanism is proposed for the formation of ZnSe belt-like structures.Strong PL from the ZnSe nanostructure can be tuned from 462 nm to 440 nm with temperature varying from 1000°C to 1200°C,and it is demonstrated that the washboard belt-like ZnSe nanostructures have potential applications in optical and sensory nanotechnology.This method is expected to be applied to the synthesis of other II-VI groups or other group’s semiconducting materials.

Washboard belt-like zinc selenide （ZnSe） nanostructures are successfully prepared by a simple chemical vapor deposi- tion （CVD） technology without catalyst. The phase compositions, morphologies and optical properties of the nanos- tructures are investigated by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, high-resolution transmis- sion electron microscopy （HRTEM） and photoluminescence （PL） spectroscop, respectively. A vapor-liquid mecha- nism is proposed for the formation of ZnSe belt-like structures. Strong PL from the ZnSe nanostructure can be tuned from 462 nm to 440 nm with temperature varying from 1000 ℃ to 1200 ℃, and it is demonstrated that the washboard belt-like ZnSe nanostructures have potential applications in optical and sensory nanotechnology. This method is ex- pected to be applied to the synthesis of other II-VI groups or other group＇s semiconducting materials.