Abstract
By controlling the reaction conditions and molar ratio of precursors carefully, three-dimensional ZnS/ZnS0.3Se0.7 nano-heterostructures were synthesized via a simple two-step magnetic force assistant growth technique. Scanning electron microscopy, X-ray powder diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy were used to characterize and analyze the morphology, phase structure, crystallinity and composition of the as-prepared nano-heterostructures. Remarkably, the epitaxial ZnS nanoribbon is single crystalline and preserves the structure and orientation of the matrix ZnSxSe1−x nanobelt with an epitaxial relationship of (0001)ZnS//(0001)ZnS0.3Se0.7 and (100)ZnS//(100)ZnS0.3Se0.7. A polar-surface induced growth process for the three-dimensional nano-heterostructures is proposed according to the experimental results and crystallography relationship. This approach can offer a prevailing way to fabricate more complex three-dimensional nanostructures with built-in heterojunctions. Room temperature PL spectra were used to investigate the emission property of the as-prepared samples. The PL spectra of ZnSe and ZnSxSe1−x nanobelts show strong near bandgap emission, demonstrating a high crystal quality of these as-synthesized nanobelts. The PL spectrum of three-dimensional ZnS/ZnS0.3Se0.7 nano-heterostructures shows the near bandgap emission of ZnS and ZnS0.3Se0.7 simultaneously, demonstrating the incorporating function. These three-dimensional nano-heterostructures with unique structure and morphology can be used to investigate the incorporating function and find extensive applications in nanophotonics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.