This book serves to familiarize the reader with measurements of optoelectronic components. Its main focus is on the implementation of these measurements and the results obtained, specifically the static electrical and optical characteristics. It therefore links these measurements to solid state physics. Steps are taken to verify the adequacy of the associated physical measures and principles. The limits of physical models for a numerical approach are also established. Furthermore, the text presents the different technologies of light-emitting diodes through developing manufacturing processes, and details the measurements and experimental analyses.