Optical absorption and x-ray diffraction in narrow-band-gap InAs/GaSb superlattices
- 15 November 1985
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 58 (10), 3933-3935
- https://doi.org/10.1063/1.335566
Abstract
We report on the optical transmission properties of narrow-band-gap (Eg<0.1 eV) InAs/GaSb superlattices grown by molecular-beam epitaxy. Energy band gaps of 0.15 and 0.085 eV at 4.8 K are determined for a 102-Å-period and a 124-Å-period superlattice, respectively. The absorption edge is extremely soft due to the spatial mismatch of hole and electron wave functions. In addition we show the first reported x-ray diffraction measurements on this materials system.Keywords
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