Abstract
Molecular beam epitaxial growth of strain-balanced InAs/InAs 1-xSbx type-II superlattices on GaSb substrates has been investigated for substrate temperatures from 400 °C to 450 °C. The Sb composition is found to vary linearly with substrate temperature at constant V/III ratios. For samples grown at the optimized substrate temperature (410 °C), superlattice zero-order peak full-width at half-maximums are routinely less than 25 arc sec using high-resolution X-ray diffraction. Cross-sectional transmission electron microscopy images show the absence of any visible defects. Strong photoluminescence covers a wavelength range from 5.5 to 13 μm at 12 K. Photoluminescence linewidth simulations show satisfactory agreement with experiments.
| Original language | English (US) |
|---|---|
| Article number | 071903 |
| Journal | Applied Physics Letters |
| Volume | 102 |
| Issue number | 7 |
| DOIs | |
| State | Published - Feb 18 2013 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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