Large-Area Semipolar Ammonothermal GaN Substrates for High-Power LEDs

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-11ER90202
Agency Tracking Number: 96736
Amount: $150,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2011
Solicitation Topic Code: 08 c
Solicitation Number: DE-FOA-0000413
Small Business Information
6500 Kaiser Drive, Fremont, CA, 94555-3613
DUNS: 809425742
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mark D'Evelyn
 (805) 683-1885
Business Contact
 Duston Williams
Title: Mr.
Phone: (510) 456-3678
Research Institution
Soraa proposes to develop low-cost, large area semipolar ammonothermal true bulk GaN substrates. Semipolar bulk GaN substrates are expected to be transformative for high power blue, green, and/or yellow LEDs, enabling high efficiency, high power density LEDs at costs below $3/kilolumen. The large cost reduction will enable widespread implementation of high-efficiency semipolar LEDs, enabling energy savings for general illumination in residential and commercial buildings of up to 1 quad/year by 2030. Semipolar crystallographic orientations of bulk GaN offer key advantages over conventional orientations for mid-spectrum light emission but are currently much too small and far too expensive to be relevant to LED manufacturing. The objectives for this Phase I project include: 1. Survey the growth properties of a range of semipolar orientations in Soraas novel high-rate SCoRA ammonothermal bulk crystal growth process, identifying at least one orientation with stable long-term growth and surface morphology characteristics and a growth rate enabling low-cost manufacturing upon scaleup. 2. Fabricate semipolar bulk GaN crystals with an area equivalent to a 1 inch diameter by means of a method that can be scaled up to 4 & quot; within two years. Soraa envisions that scale-up of the semipolar bulk GaN technology to 4 & quot; diameter, together with reduction of dislocation densities to below 104 cm-2, enabling further efficiency improvements, would be carried out during a follow-on Phase II effort

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government