Preparation Of P - Type Zinc Oxide And Barium Titanate Micro - Nanofibers By Electrospinning And Their Properties

Nanofibers as a typical representativce of one-dimensional nanomaterials has attracted attention for their several amazing characteristics such as very large surface area to volume ratio, flexibility in surface functionalities and superior mechanical performance. As a efficient and convenient preparation method, electrospinning can produce uniform ultrathin fibers from a wide range of materials in a single step, under ambient conditions and low cost.Zinc oxide(ZnO) is a promissing material used for semiconductor device,thin-film transistor and optical detector for its outstanding photoelectric performance resulted from its high band gap and large excition binding energy. Zinc oxide have become the focus of research because it has many excellent physical and chemical properties of these remarkable features make zinc oxide more and more people’s attention and attention. The second chapter describes the preparation process of the electrospun La-doped P-ZnO nanofibers and the field-effect test demonstrates that the fabricated fibers are stable P-type semiconductor materials.Barium titanate(BaTiO3) with perovskite structure is known as a electronic ceramic industry pillar for its many unique properties. The third chapter describes the fabrication process of electrospun BaTiO3 fibers and the impact caused by calcination temperature on the fiber morphology has been researched. In addition, we successfully prepared the BaTiO3 fibers with highly consistent orientations and demonstrated the fiber had a sensitive and rapid response to the humidity.In addition, we also used the method of electrostatic spinning preparation perovskite nanofibers, used for the preparation of solar cells. In recent years, the solar cell with perovskite structure has attracted more attentions and gets a rapid development. Perovskite layer plays an important role in the novel solar battery. The electrospun perovskite fiber membrane is employed to replace the troditional perovdkite layer, which is of important significance to increase the efficiency of the solar cell and promote the development of the battery.