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5 Watt per Kilogram Tritium Betavoltaic

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC18P2067
Agency Tracking Number: 186263
Amount: $124,947.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: S3
Solicitation Number: SBIR_18_P1
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-07-27
Award End Date (Contract End Date): 2019-02-15
Small Business Information
12491 SW 134 Court, Suite #23
Miami, FL 33186-0000
United States
DUNS: 364558903
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Peter Cabauy
 (305) 909-7593
Business Contact
 Peter Cabauy
Phone: (305) 909-7593
Research Institution

The proposed innovation will significantly improve the performance of tritium-powered betavoltaic batteries through the development of a high bandgap InAlP diode coupled to a high beta-flux thin film metal tritide. Tritium has a power density of 300 W/kg and City Labs’ new metal hydride film has a power density approaching 70 W/Kg and can be expanded to 100 W/kg.This project will investigate the performance improvement from a wide bandgap semiconductor diode, specifically with the goal of achieving >10% beta-electron energy conversion efficiency. The device will be built by City Labs with its tritium beta emitter expertise and MicroLink's metalorganic chemical vapor deposition (MOCVD) capability.  The proposed Phase I research seeks to develop an InAlP p/n junction with a high beta-flux metal tritide for use in betavoltaic power sources.  The betavoltaic p/n junction will increase the efficiency of betavoltaic devices from 8% up to 12%  based on the incident tritium beta flux.  The secondary goal is to investigate the release of the betavoltaic epitaxial layer through the removal of the substrate via lapidary and/or chemical etchants.

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

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