Main Page | See live article | Alphabetical index Optoelectronics is the study and application of electronic devices that interact with light. In this context, light often includes invisible forms of radiation such as ultraviolet and infrared. Optoelectronics is based on the quantum mechanical effects of light on semiconducting materials, sometimes in the presence of electric fields. Optoelectronics includes the following physical phenomena. Photoelectric or photovoltaic effect, used in: photodiodes (including solar cells) phototransistors photomultipliers Photoconductivity, used in: light-dependent resistors photoconductive camera tubes charge-coupled imaging devices Stimulated emission, used in: lasers Lossev effect, or radiative recombination, used in: light-emitting diodes or LED Photoemissivity, used in photoemissive camera tube This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.