Experimental techniques to characterize photoconductive materials

Abstract

Introduction. Photoconductive materials are those that, when exposed to electromagnetic radiation, vary their electrical conductivity. Its applications are diverse and highly valuable in science and industry. Among the experimental techniques used to characterize these materials are scanning electron microscopy, optical microscopy, ray diffraction, the tunneling effect, among others. Objective. It presents a documentary review of the experimental techniques for the characterization of photoconductive materials. Methodology. The methodology was qualitative, related to the review of scientific papers, articles and texts, which allowed establishing an approximate state of the art in this field of study. Results. Among the relevant results, it was found that the characterization depends on the nature of the material and the source of electromagnetic radiation that is used to stimulate it, such as the intensity of the light, the frequency, the number of photons, among other properties. it is possible, with due caution, to use photoconductivity as a diagnostic tool in the study of new materials and electronic devices. Also, it was observed that the majority of samples analyzed and classified reveal a tendency to increase photoconduction, in addition to the use of numerical methods to carry out virtual experiments assisted by computer simulations, whose usefulness lies in the corroboration of the results obtained. by the empirical and analytical route.