Heterostructures and infrared emitters with compressed InAsSb layers
An overview is presented of strained InAsSb heterostructures and infrared emitters. InAsSb/InGaAs strained-layer superlattices (SLS) and InAsSb quantum wells were characterized using magneto-photoluminescence and compared with unstrained InAsSb and InAs alloys. In heterostructures with biaxially compressed InAsSb, large quantum confinement energies were observed, and the holes exhibited a decrease in effective mass, approaching that of the electrons. This study demonstrates that the electrons and holes in the InAsSb heterostructures are confined in the InAsSb layers, and the band offsets are type I. A large increase in the Auger-1 threshold energy should accompany the strain-induced change in valence-band symmetry of the InAsSb layers. Correspondingly, the InAsSb heterostructures display high radiative efficiencies and increased activation energies for nonradiative recombination compared with the unstrained alloys. LEDs and L-mrs with InAsSb heterostructure active regions are described. InAsSb/InGaAs SLS LEDs operating at 300K at wavelengths {le} 5 pm have been demonstrated. Optically pumped InAsSb/InGaAs SLS lasers, with InPSb cladding, had a maximum operating temperature of 100K.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 32522
- Report Number(s):
- SAND-94-2478C; CONF-950167-1; ON: DE95008157; TRN: 95:003039
- Resource Relation:
- Conference: International conference on narrow gap semiconductors, Santa Fe, NM (United States), 9-12 Jan 1995; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
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Growth and characterization of heterostructures and infrared emitters with compressed InAsSb layers
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Related Subjects
66 PHYSICS
SUPERLATTICES
ACTIVATION ENERGY
INDIUM ALLOYS
PHOTOLUMINESCENCE
ARSENIC ALLOYS
ANTIMONY ALLOYS
GALLIUM ALLOYS
THRESHOLD ENERGY
INFRARED RADIATION
QUANTUM ELECTRODYNAMICS
HOLES
ELECTRONIC STRUCTURE
CHEMICAL VAPOR DEPOSITION
QUANTUM ELECTRONICS
AUGER ELECTRON SPECTROSCOPY
LIGHT EMITTING DIODES