Preparation and Optical Property of Long Single Crystalline ZnO Nanofibers

Long single crystal ZnO nanofibers were synthesized on a large-scale by a simple solvothermal method at low temperature in the presence of dodecyl benzene sulfonic acid sodium salt and hydrazine. X-ray diffraction, scanning electron microscopy, transmission electron microscopy and high-resolution transmission electron microscopy were used to characterize the product. The diameter of the single crystal nanofiber is 50-70 nm and the length is 30-50 μm. Due to the oxygen or the zinc vacancy in the nanofibers, the wide emission in the visible light region is increased, while the sharp UV emission still exists at 388.5 nm.