Comparison of GaNAsSb and GaNAs as quantum-well barriers for GaInNAsSb optoelectronic devices operating at 1.3-1.55 {mu}m

Journal Article · Wed Dec 01 04:00:00 EST 2004 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1807028· OSTI ID:20658095

Yuen, Homan B; Bank, Seth R; Wistey, Mark A; Harris, Jr, James S; Moto, Akihiro ^[1]

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1. Department of Electrical Engineering, Solid State and Photonics Laboratory, CIS-X 126X, Via Ortega, Stanford University, Stanford, California 94305-4075 (United States)

GaNAsSb/GaAs quantum wells were grown by solid-source molecular-beam epitaxy utilizing a radio-frequency nitrogen plasma source. The GaNAsSb layers, originally the quantum well barrier materials for GaInNAs(Sb) devices, were studied for their general growth characteristics as well as their structural and optical properties, which give an indication of its quality as a quantum well barrier material. Reflection high-energy electron diffraction, high-resolution x-ray diffraction, secondary-ion mass spectroscopy, and photoluminescence (PL) measurements were used to study those properties. The growth parameters including arsenic overpressure and substrate temperature were changed systematically to determine the properties during deposition and to optimize these conditions. It was found that the addition of antimony to GaNAs did not improve the material as it did for GaInNAs. PL measurements indicated a decreasing optical quality with an increasing substrate temperature and no change with the arsenic overpressure. In addition, the addition of antimony had eliminated the lattice-strain compensation provided by the GaNAs barriers. Using GaNAs rather than GaNAsSb barriers in the GaInNAs(Sb) devices was found to be advantageous and has dramatically improved the performance of long-wavelength GaAs-based lasers.

• OSTI ID: 20658095
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 96; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMONY COMPOUNDS
COMPARATIVE EVALUATIONS
CRYSTAL GROWTH
DEPOSITION
ELECTRON DIFFRACTION
GALLIUM ARSENIDES
GALLIUM NITRIDES
INDIUM NITRIDES
ION MICROPROBE ANALYSIS
MASS SPECTRA
MASS SPECTROSCOPY
MOLECULAR BEAM EPITAXY
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
PLASMA
QUANTUM WELLS
RADIOWAVE RADIATION
REFLECTION
SEMICONDUCTOR MATERIALS
X-RAY DIFFRACTION