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Optimizing InAs/InAsSb transport using predictive electronic structure code for carrier dynamics including Auger recombination

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9453-18-P-0224
Agency Tracking Number: F17C-T04-0049
Amount: $150,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: AF17-CT04
Solicitation Number: 2017.0
Solicitation Year: 2017
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-04-10
Award End Date (Contract End Date): 2019-04-10
Small Business Information
1165 Oakes Dr
Iowa City, IA 52245
United States
DUNS: 830006180
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Michael Flatte
 (319) 335-0201
Business Contact
 Jonathon Olesberg
Phone: (319) 321-2849
Research Institution
 State University of Iowa
Division of Sponsored Programs 2 Gilmore Hall
Iowa City, IA 52242
United States

 (319) 335-2122
 Nonprofit College or University

A model will be developed and validated for electronic transport calculations using a highly accurate, predictive electronic structure code that currently produces electronic structure, optical absorption, radiative and Auger recombination rates for InAs/InAsSb strained-layer superlattices from 5K-300K. The approach will use the novel formulation of Auger recombination pioneered at U. Iowa which divides the electron-electron scattering process into electronic response properties with a given momentum and energy, that are then connected by the Coulomb interaction matrix element. This approach will be extended to intraband scattering for electron-electron relaxation, and supplemented by scattering cross-sections obtained from realistic dopants and defects, and also bulk and superlattice phonon calculations. The results will be verified by evaluating vertical and lateral transport in mid-wavelength infrared and long-wavelength infrared InAs/InAsSb superlattices. Combined with the carrier recombination rates already available from this software the quantum efficiencies of these superlattices will be predicted.

* Information listed above is at the time of submission. *

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