期刊
APPLIED PHYSICS LETTERS
卷 95, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3216041
关键词
III-V semiconductors; indium compounds; infrared detectors; MOCVD; photodetectors; photoluminescence; semiconductor growth; semiconductor superlattices; vapour phase epitaxial growth
资金
- Natural Sciences and Engineering Research Council of Canada
- Perkin Elmer Optoelectronics, Vaudreuil, Quebec
We report the growth and optical characterization of InAsSb/InAs strain balanced superlattice structures on GaSb substrates for potential application in midinfrared photodetectors. Photoluminescence (PL) emission was observed in the range 5 mu m < 10 mu m at 4 K for Sb compositions 0.14 < x(Sb)< 0.27. The PL energy was found to depend approximately linearly on antimony, consistent with a type II band lineup. The dependence of the emission energies on the Sb mole fraction is in agreement with trends predicted by various theoretical works. The data suggest that this transition reaches zero energy for a composition of x(Sb)=0.37.
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