Electrical Contacts and Packaging for Diamond and Diamondlike High-Power Devices

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-06-M-2633
Agency Tracking Number: F061-189-2194
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: AF06-189
Solicitation Number: 2006.1
Small Business Information
626 Whitney Street, San Leandro, CA, 94577
DUNS: 836439968
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jason Wright
 (510) 483-4156
Business Contact
 Mahadevan Krishnan
Title: President
Phone: (510) 483-4156
Email: krishnan@aasc.net
Research Institution
The purpose of this Phase-I SBIR is to demonstrate the feasibility of using filtered cathodic arc deposition (FCAD) to fabricate improved metal multilayer Ohmic and Schottky contacts to CVD diamond. Polycrystalline CVD diamond substrates will be acquired, on which eight Ohmic and two Schottky contact metal multilayer architectures will be fabricated using FCAD. Linear transmission line model (LTLM) and van der Pauw test structures will be photolithographically patterned on Ohmic contacts using standard semiconductor lift off or etch back procedures. These test structures will be used to measure the specific contact resistivity and sheet resistance of Ohmic contacts. The microstructural evolution due to interdiffusion processes, solid-state reactions, and oxidation will be characterized by successive Rutherford backscattering spectroscopy (RBS) and LTLM electrical measurements during thermal aging at 250°C in air for 750 hours. Horizontal Schottky barrier diode (SBD) test structures will be fabricated using FCAD and photolithography, incorporating the best performing Ohmic contact. Current-voltage curves will be measured as a function of temperature, to 250°C, to evaluate the performance of rectifying contacts.

* information listed above is at the time of submission.

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