Repotenciación y uso del sistema Van der Pauw del laboratorio de materia condensada: caracterización de películas delgadas.

Abstract

The objective of this work is to obtain and characterization of semiconductor thin films from organic material processed through magnetic damping, freezing, calcining on a hot plate and making laser irradiation affect to obtain graphene at different conditions and with different geometric shapes. Thei necessaryi datai for the elaborationi of the material were obtainedi from the compilation of documents and experiments in laboratories; these data werei used to prepare the l DOE (Design Of Experiment). The materiali hasi beeni characterized by Raman l spectroscopy and Van der Pauw analysis. The results indicate l that the material l continues to present the characteristics of graphene, D, G and 2D, however there is the presence l of other bands that demonstrate the existence of defects, such as the presence of graphene oxide, sp3 type defects and l the amount of layers, which in this case is bilayer and multilayer. With the resistance obtained, it is affirmed that it is l a semiconductor material where l the figure with the best results is the square.