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THEORETICAL ANALYSIS OF HETEROJUNCTION DOUBLE BARRIER DIODES FOR LOGIC APPLICATIONS

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 6119
Amount: $352,000.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1988
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
4516 Henry St
Pittsburgh, PA 15213
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr Darryl D Coon
 (412) 624-9080
Business Contact
Phone: () -
Research Institution
N/A
Abstract

THE USE OF LOGIC CIRCUITS EMPLOYING HETEROJUNCTION DOUBLE BARRIER DIODES WITH NEGATIVE DIFFERENTIAL RESISTANCE REGIONS WILL BE EXAMINED THEORETICALLY. SWITCHING TIME LIMITATIONS WILL BE ESTIMATED BASED ON CIRCUIT CONSIDERATIONS AND THE DEVICE ARCHITECTURE. FUNDAMENTAL LIMITATIONS ARISING FROM RIGOROUS UNITARITY BOUNDS AND DISPERSION EFFECTS INVOLVING QUANTUM MECHANICAL RESONANT TUNNELING TIME DELAY WILL BE INCLUDED. THE FUNDAMENTAL LIMIT CONSIDERATIONS ARE SUFFICENTLY GENERAL TO APPLY TO BARRIERS WITH ARBITRARY SHAPE. PRELIMINARY THEORETICAL ESTIMATES INDICATE THAT PICOSECOND OR SUBPICOSECOND SWITCHING TIMES MIGHT BE ACHIEVABLE WITH APPROPRIATELY DESIGNED AL(X)GA(1-X)AS/GAAS DEVICES. THESE SWITCHING TIMES ARE SO SHORT THAT IT BECOMES IMPORTANT TO EXAMINE ALL EFFECTS WHICH COULD LIMIT PERFORMANCE.

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

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