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Gradually buffered, delta-doped AlGaN/GaN/AlGaN Heterostructure Field-Effect…

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
74622
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
044-1577
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Sensor Electronic Technology, Inc.
1195 Atlas Road Columbia, SC -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2005
Title: Gradually buffered, delta-doped AlGaN/GaN/AlGaN Heterostructure Field-Effect Transistors
Agency / Branch: DOD / MDA
Contract: HQ0006-05-C-7205
Award Amount: $99,867.00
 

Abstract:

New structure GaN-based field effect transistors (FETs) are proposed to solve the problem. A composition graded buffer, aiming at eliminating dislocations arising from hetero-epitaxy interface and suppressing channel electrons spillover under negative gate bias, a Si-delta-doped GaN layer just below the two-dimensional electron gas (2DEG) channel, used for polarization fields screening as well as carrier supplier, are the major innovations of the new structure. We propose to use a composition-graded AlGaN transition layer in-between the AlN buffer and the GaN layer. This carefully designed transition layer will be insulating and can gradually accommodate the lattice mismatch between AlN and GaN, eliminating/alleviating the dislocation generation. The piled-up polarization fields, which could deplete the 2DEG channel, will be taken care of by inserting a Si-delta-doping layer in the vicinity to the channel. Simulations will be done to guide experiments and find out the interactions among the composition grading, polarization fields and Si-delta-doping (concentration and position).

Principal Investigator:

Qhalid Fareed
Senior Growth Engineer
8036479757
fareed@s-et.com

Business Contact:

Remis Gaska
President and CEO
8036479757
gaska@s-et.com
Small Business Information at Submission:

SENSOR ELECTRONIC TECHNOLOGY, INC.
1195 Atlas Road Columbia, SC 29209

EIN/Tax ID: 141812556
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No