skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Raman Scattering Study of Lattice Vibrations in the Type-II Superlattice InAs / InAs 1 - x Sb x

Journal Article · · Physical Review Applied
 [1];  [1];  [2];  [2];  [2];  [2];  [3];  [3];  [3];  [3];  [4];  [4];  [4]
  1. Univ. of North Carolina, Charlotte, NC (United States). Optical Science and Engineering Graduate Program and Dept. of Electrical and Computer Engineering
  2. Arizona State Univ., Tempe, AZ (United States). Center for Photonics Innovation and School of Electrical, Computer and Energy Engineering
  3. Georgia Inst. of Technology, Atlanta, GA (United States). Center for Compound Semiconductors and School of Electrical and Computer Engineering
  4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The InAs/InAs1-x Sbx superlattice system distinctly differs from two well-studied superlattice systems GaAs/AlAs and InAs/GaSb in terms of electronic band alignment, common elements at the interface, and phonon spectrum overlapping of the constituents. This fact leads to the unique electronic and vibrational properties of the InAs/InAs1-xSbx system when compared to the other two systems. Here in this work, we report a polarized Raman study of the vibrational properties of the InAs/InAs1-x Sbx superlattices (SLs) as well as selected InAs1-xSbx alloys, all grown on GaSb substrates by either MBE or metalorganic chemical vapor deposition (MOCVD) from both the growth surface and cleaved edge. In the SL, from the (001) backscattering geometry, an InAs-like longitudinal optical (LO) mode is observed as the primary feature, and its intensity is found to increase with increasing Sb composition. From the (110) cleaved-edge backscattering geometry, an InAs-like transverse optical (TO) mode is observed as the main feature in two cross-polarization configurations, but an additional InAs-like “forbidden” LO mode is observed in two parallel-polarization configurations. The InAs1-xSbx alloys lattice matched to the substrate ( xSb ~ 0.09) grown by MBE are also found to exhibit the forbidden LO mode, implying the existence of some unexpected [001] modulation. However, the strained samples (xSb~ 0.35) grown by MOCVD are found to behave like a disordered alloy. The primary conclusions are (1) the InAs-like LO or TO mode can be either a confined or quasiconfined mode in the InAs layers of the SL or extended mode of the whole structure depending on the Sb composition. (2) InAs/InAs1-xSbx and InAs/GaSb SLs exhibit significantly different behaviors in the cleaved-edge geometry but qualitatively similar in the (001) geometry. (3) The appearance of the forbidden LO-like mode is a universal signature for SLs and bulk systems resulting from the mixing of phonon modes due to structural modulation or symmetry reduction.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); US Army Research Office (ARO)
Grant/Contract Number:
AC04-94AL85000; W911NF-10-1-0524; NA0003525
OSTI ID:
1467461
Alternate ID(s):
OSTI ID: 1394874
Report Number(s):
SAND-2017-10149J; PRAHB2; 657091
Journal Information:
Physical Review Applied, Vol. 8, Issue 3; ISSN 2331-7019
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (44)

Auger lifetime enhancement in InAs–Ga 1− x In x Sb superlattices journal June 1994
Structural studies of natural superlattices in group III-V alloy epitaxial layers journal January 1993
High performance long wavelength infrared mega-pixel focal plane array based on type-II superlattices journal November 2010
Growth of type II strained layer superlattice, bulk InAs and GaSb materials for minority lifetime characterization journal November 2011
Lattice vibration modes in type-II superlattice InAs/GaSb with no-common-atom interface and overlapping vibration spectra journal June 2015
Passivation techniques for InAs/GaSb strained layer superlattice detectors: Passivation Techniques for InAs/GaSb SLS detectors journal March 2012
Influence of radiative and non-radiative recombination on the minority carrier lifetime in midwave infrared InAs/InAsSb superlattices journal November 2013
Electric-field-induced Raman scattering: Resonance, temperature, and screening effects journal September 1986
Bandgap and temperature dependence of Auger recombination in InAs/InAsSb type-II superlattices journal June 2016
Phonons in GaAs-AlxGa1−xAs superlattices journal December 1989
Resonance Raman scattering studies of composition-modulated GaP/InP short-period superlattices journal August 1999
Direct minority carrier transport characterization of InAs/InAsSb superlattice nBn photodetectors journal February 2015
Long-wave infrared nBn photodetectors based on InAs/InAsSb type-II superlattices journal October 2012
Vertical Hole Transport and Carrier Localization in InAs / InAs 1 x Sb x Type-II Superlattice Heterojunction Bipolar Transistors journal February 2017
Raman scattering in GaSb‐AlSb strained layer superlattices journal April 1985
Calculated superlattice and interface phonons of InAs/GaSb superlattices journal June 1986
The best thermoelectric. journal July 1996
Monolayer-by-monolayer compositional analysis of InAs/InAsSb superlattices with cross-sectional STM journal September 2015
Low operating bias InAs/GaSb strain layer superlattice LWIR detector journal May 2015
Investigation of impurities in type-II InAs/GaSb superlattices via capacitance-voltage measurement journal July 2013
The Raman effect in crystals journal October 1964
Lattice dynamics and Raman scattering by phonons of GaAs/AlAs(001) superlattices journal June 2009
Significantly improved minority carrier lifetime observed in a long-wavelength infrared III-V type-II superlattice comprised of InAs/InAsSb journal December 2011
Raman scattering in InAs 1-x Sb x alloys grown on GaAs by molecular beam epitaxy journal April 1992
Selection rules and dispersion of GaAs/AlAs multiple-quantum-well optical phonons studied by Raman scattering in right-angle, forward, and backscattering in-plane geometries journal May 1995
Strain-balanced InAs/InAs 1−x Sb x type-II superlattices grown by molecular beam epitaxy on GaSb substrates
  • Steenbergen, Elizabeth H.; Nunna, Kalyan; Ouyang, Lu
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 30, Issue 2 https://doi.org/10.1116/1.3672028
journal March 2012
All-optical measurement of vertical charge carrier transport in mid-wave infrared InAs/GaSb type-II superlattices journal May 2013
Raman scattering from Ge x Si 1− x /Si strained‐layer superlattices journal November 1984
Interface-phonon dispersion and confined-optical-mode selection rules of GaAs/AlAs superlattices studied by micro-Raman spectroscopy journal August 1992
Transmission electron microscopy and transmission electron diffraction structural studies of heteroepitaxial InAs y Sb 1− y molecular‐beam epitaxial layers journal June 1993
Resonant quasiconfined optical phonons in semiconductor superlattices journal February 1989
Long wavelength InAs/InGaSb infrared detectors: Optimization of carrier lifetimes journal December 1995
Raman scattering in InAs 1− x Sb x grown by organometallic vapor phase epitaxy journal September 1988
Proposal for strained type II superlattice infrared detectors journal September 1987
Detection of excess crystalline As and Sb in III‐V oxide interfaces by Raman scattering journal December 1977
Fundamentals of Semiconductors book January 2010
Growth and characterization of InAs/InAsSb superlattices by metal organic chemical vapor deposition for mid-wavelength infrared photodetectors journal February 2016
Dark current reduction in InAs/InAsSb superlattice mid-wave infrared detectors through restoration etch journal November 2015
Structural and optical characterization of type-II InAs/InAs 1−x Sb x superlattices grown by metalorganic chemical vapor deposition journal August 2011
Resonance Raman Scattering by Confined LO and TO Phonons in GaAs-AlAs Superlattices journal May 1985
Strain in coherent-wave SiGe/Si superlattices journal May 2000
“Quantum Coaxial Cables” for Solar Energy Harvesting journal May 2007
Evidence of a Shockley-Read-Hall Defect State Independent of Band-Edge Energy in InAs / In ( As , Sb ) Type-II Superlattices journal May 2016
Phonon confinement in InAs/GaSb superlattices journal April 1991

Similar Records

Ordering and bandgap reduction in InAs{sub 1{minus}x}Sb{sub x} alloys
Conference · Wed Feb 01 00:00:00 EST 1995 · OSTI ID:1467461

Raman scattering study of InAs/GaInSb strained layer superlattices
Journal Article · Fri Nov 15 00:00:00 EST 1991 · Journal of Applied Physics; (United States) · OSTI ID:1467461

A structural investigation of compositionally graded InAs/sub x/Sb/sub 1-x/ buffer layers
Conference · Fri Jan 01 00:00:00 EST 1988 · OSTI ID:1467461