Bormann, I. and Brunner, K. and Hackenbuchner, S. and Zandler, G. and Abstreiter, Gerhard and Schmult, Stefan and Wegscheider, Werner
Midinfrared intersubband electroluminescence of Si/SiGe quantum cascade structures.
Applied Physics Letters 80 (13), pp. 2260-2262.
at publisher (via DOI)
Unipolar intersubband lasers like quantum cascade laser structures might be realized not only in III–V semiconductors but also in Si/SiGe multiple layer structures since no optical transitions across the indirect band gap are involved. We report on well-defined intersubband electroluminescence emission of Si/SiGe quantum cascade structures with different active quantum wells parameters. The ...
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