Study On Preparation And Properties Of Al Doped ZnO Nanocomposite Fibers

Composite nanofibers as a new kind of functional materials have attracted muchattention in recent years,with the development of the technology.Different doping concentration Al-doped ZnO nanofibers were synthesized by Atom Layer Deposition（ALD）using PVP fibers as template.The influence of Al doping concentration on the structure and optical properties of nanofibers was investigated.The samples were characterized by means of X-ray diffraction spectra,field emission scanning electron microscopy（FESEM）.After doping,the morphologies were not changed,only the diameters of Al-doped ZnO nanofibers s became larger.Compared with undoped ZnO,the intensity of diffractive peaks of Al-doped ZnO nanofibers became weak with the increasing of the doping concentration due to stress generation in the crystallization process.In raman spectra,Al₂O₃ peak related peaks were also observed.In addition,the intensity of UV emission decreased with increasing Al doping concentration and had a red shift.Finally,the application of Al doped ZnO nanofiber materials in optoelectronic devices is proposed.The test results show that the scheme is feasible and the specific performance index remains to be further tested and analyzed.