Light Emitting Diode and Organic Laser

  • Karl F. RenkEmail author
Part of the Graduate Texts in Physics book series (GTP)


The development of semiconductor lasers is accompanied by the development of light emitting diodes (LEDs). An LED, based on spontaneous electron-hole recombination, does not require a cavity and can therefore have a simpler design than a laser. We discuss properties of diodes and mention various areas of applications. There is a growing market of LEDs as lighting sources. Superluminescent semiconductor diodes can reach high efficiencies. Stimulated emission just below laser threshold is favorable for a high efficiency.


Anode Material Excited Molecule Organic Lead Luminescence Radiation Empty Level 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institut für Angewandte PhysikUniversität RegensburgRegensburgGermany

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