The Double-Heterostructure Concept: How It Got Started

  title={The Double-Heterostructure Concept: How It Got Started},
  author={H. Kroemer},
  journal={Proceedings of the IEEE},
  • H. Kroemer
  • Published 2013
  • Materials Science, Computer Science
  • Proceedings of the IEEE
The double-heterostructure (DH) concept for lasers and light-emitting diodes (LEDs) grew out of the prelaser context of increasing the speed of the early bipolar junction transistors. The 1954 idea was to change the energy gap itself, with a graded-gap base, or a wide-gap emitter. This led to the 1957 more general concept of quasi-electric fields and potentials in structures with a position-dependent energy gap. This paper gives a personal chronological account of the evolution of these… Expand
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