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Lateral Epitaxial Overgrowth of GaN for Electronic Devices

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
41208
Program Year/Program:
1998 / SBIR
Agency Tracking Number:
41208
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Witech (widegap Technology,
5655 Lindero Canyo Road, Suite 404 Westlake Village, CA 91362
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1998
Title: Lateral Epitaxial Overgrowth of GaN for Electronic Devices
Agency / Branch: DOD / MDA
Contract: N/A
Award Amount: $59,710.00
 

Abstract:

WiTech proposes the development of ultra low dislocation density GaN wafers for very high performance electronic device applications using Lateral Epitaxial Overgrowth (LEO) on lattice mismatched sapphire substrates. Dislocations in GaN are ubiquitous, a direct result of the lack of a lattice matched substrate for GaN thin films. Lateral Epitaxn'al Overgrowth is a process by which crystal growth is accomplished in directions parallel to the plane of the substrate. This innovative growth technique relieves strain between GaN films and the substrate and provides a means to terminate dislocation propagation in epitaxial films. Achieving device quality LEO material (very low dislocation density, very high electron mobility, high electronic quality insulating buffers) will be undertaken as the primary goal of the process development. During phase I we will initiate the development of LEO GaN wafers and evaluate the electrical and structural quality of the LEO material. At the end of phase II, WiTech will have prototype 2 sapphire substrates. Utilizing innovative device design, very high performance X-band GaN power HEMT devices with wide gate peripheries will be fabricated to demonstrate the significance of the improved LEO GaN material quality.

Principal Investigator:

David Kapolnek
8059649419

Business Contact:


0
Small Business Information at Submission:

Witech (widegap Technology,
5655 Lindero Canyo Road, Suite 404 Westlake Village, CA 91362

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No