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STTR Phase I: Growth of 3C-SiC Substrates using High-Temperature Chemical…

Award Information

National Science Foundation
Award ID:
Program Year/Program:
2006 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
BarSiC Semiconductors, LLC
209 Brook Ave Starkville, MS 39759 4359
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2006
Title: STTR Phase I: Growth of 3C-SiC Substrates using High-Temperature Chemical Vapor Deposition
Agency: NSF
Contract: 0538994
Award Amount: $99,956.00


This Small Business Technology Transfer (STTR) Phase I project aims at developing new material growth technology for manufacturing semiconductor substrates of cubic 3C-SiC polytype for high-power, high-frequency, high-temperature, and high-radiation hardness military, space, and commercial applications. The new process for SiC epitaxial growth utilizes novel mechanisms of gas phase and surface reactions. These mechanisms are provided by using halo-carbon growth chemistry replacing the traditional propane-based system. Applied to homoepitaxial growth of the 4H-SiC polytype, the new growth method resulted in defect-free epilayers at temperatures as low as 1350C, which is much lower than what was considered possible for high-quality growth. Simultaneously, a drastic increase of the growth rate in comparison to the propane-based growth was achieved at regular for 4HsiC growth temperatures. The halo-carbon growth promises to resolve critical problems impeding 3C-SiC commercialization such as morphology degradation by unfavorable homogeneous reactions, lattice mismatch-related defect generation, and growth rate reduction by silicon vapor condensation. Commercial supply of wafers of 3C-SiC polytype is not available today. Growing efforts to develop and commercialize 3C-SiC technology in Japan and Europe may put the wide band gap industry in the US significantly behind in cost-efficiency of SiC electronics. This novel fabrication method offers a possibility of a strong competitive advantage. The potential for process scaling makes it possible to achieve large-diameter 3C wafers in less than 3 years. Use of Si substrates for 3C seed growth will ensure an estimated order of magnitude advantage in cost-to-diameter ratio in comparison to 4H and 6H-SiC wafers. Overcoming the price and wafer size limitations of the existing SiC technologies will significantly speed up commercial acceptance of high-power and high frequencySiC devices.

Principal Investigator:

Galyna Melnychuk

Business Contact:

Yaroslav Koshka
Small Business Information at Submission:

BarSiC Semiconductors, LLC
209 Brook Avenue Strakville, MS 39759

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
MS State University
PO Box 6156
MS State, MS 39762
Contact: Yaroslav Koshka
Contact Phone: (662) 325-2411
RI Type: Nonprofit college or university