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Thin-absorber AlInAsSb APDs for low-noise and low-voltage e-SWIR photodetection

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-22-P-0067
Agency Tracking Number: A22B-T011-0159
Amount: $172,876.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: A22B-T011
Solicitation Number: 22.B
Solicitation Year: 2022
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-09-20
Award End Date (Contract End Date): 2023-03-19
Small Business Information
20 New England Business Center
Andover, MA 01810-1111
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Kyle Dorsey
 (978) 738-8154
Business Contact
 William Marinelli
Phone: (978) 738-8226
Research Institution
 The University of Texas at Austin Office of Sponsored Projects
 Sofia Zanabria
3925 W. Braker Lane, Suite 3.340 (Mail Code A9000)
Austn, TX 78759-5316
United States

 (512) 471-4241
 Nonprofit College or University

Physical Sciences Inc. and Prof. Seth Bank at the University of Texas Austin will develop thin-absorber avalanche photodiodes based on digital alloys of AlInAsSb for high-performance photodetection between 2.0 – 2.5 μm. The AlInAsSb quaternary alloy system allows for compositional grading throughout the device structure, enabling novel photodiode architectures inaccessible with other III-V alloy systems. Our team will grow, fabricate, and characterize both single pixels and pixel arrays of AlInAsSb avalanche photodiodes based on a thin-absorber architecture for dark current suppression. The thin-absorber architecture, combined with additional innovations in the avalanche multiplication region, will simultaneously enable low-voltage, high-gain, low-noise, and low dark current operation. Achievement of these objectives will enable integration with Si CMOS readout circuitry for low power-consumption digital infrared focal plane arrays.

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

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