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Full Spectrum Photovoltaic Cells

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N62583-11-P-0530
Agency Tracking Number: N103-233-0114
Amount: $69,052.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N103-233
Solicitation Number: 2010.3
Solicitation Year: 2010
Award Year: 2011
Award Start Date (Proposal Award Date): 2011-02-04
Award End Date (Contract End Date): N/A
Small Business Information
200 Innovation Blvd., Suite 260A
State College, PA -
United States
DUNS: 786049655
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Travis Benanti
 Materials Scientist
 (814) 234-2009
Business Contact
 Stephen Fonash
Title: CTO
Phone: (814) 404-1259
Research Institution

This proposal addresses the development of multi-junction solar cells for more complete utilization of the full solar spectrum. The approach uses a cell architecture based on an electrode nano-element array and a counter electrode array to achieve optimized light and carrier collection management (LCCM) inside a multi-junction device. The LCCM architecture applied to multi-junctions gives (1) enhanced absorption in all layers, (2) enhanced long wavelength absorption, (3) the freedom to reduce absorber layer thicknesses, due to the enhanced absorption, (4) the opportunity to use absorbers with lower carrier mobilities and lifetimes (i.e., thin film material utilization), and (5) reduced sensitivity to the light impingement angle. A six month effort for exploring this concept is proposed by a Solarity/University of Arkansas team which will have the tasks of (1) collecting data for candidate chalcogenide and III-V materials including band gap parameters (electron affinity and band gap) and optical properties (complex index of refraction), (2) assessment of possible multi-junction fabrication paths, (3) computer simulation of LCCM multi-junction performance, and computer device design optimization, and (4) technical determination of the overall feasibility of the LCCM approach to significantly improving full spectrum multi-junction performance.

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

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