NASA SBIR 2007 Solicitation


PROPOSAL NUMBER: 07-1 S3.03-9444
SUBTOPIC TITLE: Power Generation and Storage
PROPOSAL TITLE: Nanostructured InGaP Solar Cells

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Kopin Corporation
200 John Hancock Road
Taunton, MA 02780 - 7320
(508) 824-6696

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Roger Welser
200 John Hancock Road
Taunton, MA 02780 - 7320
(508) 824-6696

Expected Technology Readiness Level (TRL) upon completion of contract: 1 to 3

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
The operating conditions of conventional multijunction solar cells are severely limited by the current matching requirements of serially connected devices. The goal of this SBIR program is to enhance the operating tolerance of high efficiency III-V solar cells by employing nanostructured materials in an advanced device design. By using quantum wells and quantum dots embedded in a higher band gap barrier material, solar cell devices that avoid the limitations of current matching can be constructed. This Phase I effort will focus on quantifying the trade-offs between short circuit current and open circuit voltage in InGaP / InGaAs nanostructures. Ultimately, the technical approach employed in this program has the potential of achieving conversion efficiencies exceeding 50% with a single p-n junction device, enabling improved overall performance and lower manufacturing costs than existing technologies.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Future space exploration missions will require photovoltaic power systems capable of operating over a wide range of conditions, including extreme environments with high temperature and tremendous radiation exposures. Conventional multijunction solar cells can provide high conversion efficiencies, but only under limited environmental conditions. The near term objective of this SBIR program is to build a solar cell using nanostructured wide band gap materials that matches the conversion efficiency of conventional multijunction technologies while performing over a much wider range of operating conditions. The technology developed during this program is expected to have immediate market opportunities as power systems for NASA science missions.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
The SBIR project described here is part of a larger effort to realize the ultimate objective of third generation photovoltaics, namely ultra-high conversion efficiency at low costs. The wider operating conditions enabled by nanostructured InGaP solar cells would substantially enhance the overall performance of terrestrial concentrator photovoltaic systems. This technology could thus accelerate the adoption of photovoltaics into the renewable energy market to address the world's growing energy needs without degrading the environment. In addition to its potential commercial value and social benefits, this SBIR program will enhance the technical understanding of quantum well and quantum dot devices.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Photovoltaic Conversion
Radiation-Hard/Resistant Electronics
Renewable Energy
Semi-Conductors/Solid State Device Materials

Form Generated on 09-18-07 17:50