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Award

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5 Watt per Kilogram Tritium Betavoltaic

Awardee

CITY LABS, INC.

12217 SW 131ST AVE
MIAMI, FL, 33186-6401
USA

Award Year: 2019

UEI: LD55BB3D8EM7

HUBZone Owned: No

Woman Owned: No

Socially and Economically Disadvantaged: No

Congressional District: 26

Tagged as:

SBIR

Phase II

Seal of the Agency: NASA

Awarding Agency

NASA

Total Award Amount: $750,000

Contract Number: 80NSSC19C0178

Agency Tracking Number: 186263

Solicitation Topic Code: S3

Solicitation Number: SBIR_18_P2

Abstract

The central goal of this Phase II effort is to create the worldrsquo;s first milliwatt scale betavoltaic. This project will utilize an ultra-thin, light weight, betavoltaic p/n junction, developed in Phase I, that increases the efficiency of betavoltaic devices from 8% to greater than 10% based on the incident tritium beta flux.nbsp; Betavoltaic power sources offer advantages under conditions that render battery replacement difficult, impossible, or life-threatening, and in applications where long-lasting (20+ years), continuous, low-power sources are crucial to device operation. These applications include defense electronics, homeland security, intelligence sensors, aerospace, structural-health monitoring sensors, sub-sea sensors, satellites / deep space probes, and medical devices / implants.nbsp; City Labs is the only licensed manufacturer of betavoltaic power sources which carries a General License allowing distribution to anyone in the United States without requiring the recipient to possess a radiation license.nbsp; The specific power of tritium is 340 W/kg with a half-life of 12.3 years and is readily available for commercial applications such as luminous watch dials, exit signs, medical tracers, and betavoltaic batteries. Traditionally, tritium metal hydride films have had a power density of approximately 38 W/kg (e.g. titanium tritide) but City Labsrsquo; new metal tritide film has a power density approaching 70 W/Kg and can be expanded to 100 W/kg. The milliwatt scale betavoltaic will consist of a wide bandgap III-V p/n junction, developed in Phase I, and a high beta-flux metal tritide, stacked into layers of ultra-thin junctions. City Labs will perform this work in partnership with Microlink Devices, a leader in metalorganic chemical vapor deposition (MOCVD) and epitaxial lift-off (ELO) junctions.

Award Schedule

  1. 2018
    Solicitation Year

  2. 2019
    Award Year

  3. August 7, 2019
    Award Start Date

  4. August 6, 2021
    Award End Date

Principal Investigator

Name: Peter Cabauy
Phone: (305) 909-7593
Email: peter.cabauy@citylabs.net

Business Contact

Name: Peter Cabauy
Phone: (305) 909-7593
Email: peter.cabauy@citylabs.net

Research Institution

Name: N/A