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- Title
Intersubband electroluminescence from silicon-based quantum cascade structures.
- Authors
Dehlinger, G; Diehl, L; Gennser, U; Sigg, H; Faist, J; Ensslin, K; Grutzmacher, D; Muller, E
- Abstract
The quantum cascade laser, which uses electronic transitions within a single band of a semiconductor, constitutes a possible way to integrate active optical components into silicon-based technology. This concept necessitates a transition with a narrow linewidth and an upper state with a sufficiently long lifetime. We report the observation of intersubband electroluminescence from a p-type silicon/silicon-germanium quantum cascade structure, centered at 130 millielectron volts with a width of 22 millielectron volts, with the expected polarization, and discernible up to 180 kelvin. The nonradiative lifetime is found to depend strongly on the design of the quantum well structure, and is shown to reach values comparable to that of an equivalent GaInAs/AlInAs laser structure.
- Publication
Science (New York, N.Y.), 2000, Vol 290, Issue 5500, p2277
- ISSN
0036-8075
- Publication type
Journal Article
- DOI
10.1126/science.290.5500.2277