Efeito fotoelétrico e suas aplicações

Abstract

The objective of this monograph work is to introduce general acquirements about the Photoelectric Effect, as well as, to describe some basic electronic devices that use the advantage of these effect, that are widely employed in industries, homes, and commercial establishments, allowing, this way, to perform several functions, such as to activate conveyors belt register cashiers, opening and closing elevators doors, to generate energy by using solar panels. In order to enlarge the subject, we will to start our manuscript by “Light History”, the clash between two theories: one where the light present a wave like behavior, and another proposing a corpuscular theory of the light until the a great understanding of its nature by Planck work’s about the Black Body Radiation and Einstein Photoelectric Effect theory. Afterward, were described about photocells, photodiodes and photo resistors, devices where the photoelectric effect are present.