Porous Polycrystalline Silicon Solar Cells

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 19625
Amount: $49,956.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Structured Materials
240 Martin Luther King Blvd, Newark, NJ, 07102
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gang Sun, Phd
 (201) 471-3589
Business Contact
Phone: () -
Research Institution
N/A
Abstract
IT HAS BEEN SHOWN THAT EFFICIENT PHOTOLUMINESCENCE CAN BE OBSERVED FROM POROUS SILICON, WHEN THE POROSITY IS SUFFICIENTLY HIGH. THIS RESULT HAS BEEN ATTRIBUTED TO QUANTUM SIZE EFFECTS, DUE TO THE FORMATION OF SILICON "WIRES". IN RECENT WORK AIMED AT THE DEVELOPMENT OF LIGHT EMITTING DEVICES, WE HAVE ALSO DEMONSTRATED PHOTOLUMINESCENCE RANGING FROM IR, THROUGH THE VISIBLE, TO UV, IN Si AND Ge QUANTUM NANOCRYSTALS (QNCs) EMBEDDED IN A SILICON DIOXIDE (SiO(2)) MATRIX. WE NOW PROPOSE TO DEVELOP POROUS SILICON SOLAR CELLS BASED ON THE RECENT RESULTS AND OUR KNOWLEDGE OF NANOSTRUCTURED MATERIALS. THESE SOLAR CELLS WILL BE FABRICATED BY A UNIQUE WAFER BONDING PROCESS AND ALSO BY MODIFYING EXISTING COMMERCIAL SOLAR CELLS. THE BAND STRUCTURE OF POROUS SILICON IS IDEALLY SUITED FOR SOLAR CELL APPLICATIONS. THIS IS SUPPORTED BY THE RECENT DEMONSTRATION OF A HIGHLY SENSITIVE PHOTODETECTOR, WITH CLOSE TO UNITY QUANTUM EFFICIENCY.

* information listed above is at the time of submission.

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