ATTOLLO ENGINEERING, LLC STTR Phase II Award, March 2022

A STTR Phase II contract was awarded to ATTOLLO ENGINEERING, LLC in March, 2022 for $749,689.0 USD from the U.S. Department of Defense and United States Air Force.

Overview Structured Data Issues Contributors Activity

sbir.gov/node/2239149

Is a

SBIR/STTR Awards

SBIR/STTR Award attributes

SBIR/STTR Award Recipient

ATTOLLO ENGINEERING, LLC

Government Agency

U.S. Department of Defense

Government Branch

United States Air Force

Award Type

STTR0

Contract Number (US Government)

FA8649-22-P-07360

Award Phase

Phase II0

Award Amount (USD)

749,6890

Date Awarded

March 9, 2022

End Date

June 8, 2023

Abstract

Attollo proposes to develop GeSn/Si heterojunction APDs by employing semiconductor grafting techniques that was invented by our partner Prof. Zhenqiang (Jack) Ma at University of Wisconsin. The band offset between Ge0.9Sn0.1 and Si is about zero eV, allowing electrons to be collected in the avalanche Si region without any energy barrier, which is ideal for APD applications. Note that the proposers have checked 6 other types of possible material candidates with > 2µm absorption that can also be grafted with Si by Prof. Ma at UW-Madison, including Ga0.34In0.66As, In0.73As0.27P, Hg0.58Cd0.42Se, and others. All of these candidates have a negative band offset with Si, thus forming an electronic energy barrier for electrons to be collected by Si for multiplication.