La-SERIES OXIDE NANOFIBERS AND THE FABRICATION METHODS THEREOF, P TYPE GAS SENSORS, ELECTRIC CONDUCTORS AND NANORODS USING THE SAME

摘要

PURPOSE: An LA based oxide nanofiber, a manufacturing method thereof, p type gas sensor using thereof, an electrical conductor, and a nanonrod are provided to obtain fibril structure and semiconductor structure with improved electric conductivity. CONSTITUTION: An LA based oxide nanofiber comprises LaOCl-NiO mixture oxide which consists of fine nano particles, LaOCl-NiO-LaNiO3 mixture oxide, or LaNiO3 oxide components. The fine nano particle has particle size of 2-500 nano meters. The LaOCl and NiO of the LaOCl-NiO mixture oxide nanofiber have characteristics of P-type semiconductor chip. The LaNiO3 oxide has acubic perovskite structure. A manufacturing method of the La based oxide nanofiber comprises the following steps: mixing La precursor which includes Cl and Ni precursor and forming a spinning solution which contains precursor; forming the metal oxide precursor-polymer composite nanofiber from the spinning solution by using an electrospinning apparatus; and heat-treating in order to eliminate the polymer of the composite nanofiber; and obtaining LaOCl-NiO mixture oxide, LaOCl-NiO-LaNiO3 mixture oxide, or LaNiO3 oxide according to the thermal annealing temperature.