Abstract
The design and fabrication of metamorphic periodic heterostructures containing InAsSb layers with controllable modulated Sb composition and well-regulated band alignments are reported. The bandgap energy of ordered alloy can be much smaller than that in bulk InAsSb with any Sb content. The modulation period is determined by the thicknesses of the strain compensated InAsSbx/InAsSby pairs grown on a virtual GaInzSb substrate with a given lattice constant. The experiment shows that the deviation of the modulation period from ∼2.3 to ∼5.5 nm leads to the shift of the maximum of 20 K photoluminescence from 12.9 to 19.6 μm. It is concluded that the growth of strain compensated InAsSbx/InAsSby on virtual substrates allows developing narrow bandgap III-V materials with various bandgap energies.
| Original language | English |
|---|---|
| Pages (from-to) | 1521-1522 |
| Number of pages | 2 |
| Journal | Electronics Letters |
| Volume | 51 |
| Issue number | 19 |
| DOIs | |
| State | Published - Sep 17 2015 |
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