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High-Efficiency Rad-Hard Ultra-Thin Si Photovoltaic Cell Technology for Space

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX14CC40P
Agency Tracking Number: 144293
Amount: $124,968.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: Z1.01
Solicitation Number: N/A
Timeline
Solicitation Year: 2014
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-06-20
Award End Date (Contract End Date): 2014-12-19
Small Business Information
701 McMillian Way NW, Suite D
Huntsville, AL 35806-2923
United States
DUNS: 185169620
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 Alex Fedoseyev
 Senior Principal Engineer
 (256) 726-4800
 aif@cfdrc.com
Business Contact
 Silvia Harvey
Title: Business Official
Phone: (256) 726-4858
Email: sxh@cfdrc.com
Research Institution
 Stub
Abstract

Improvements to solar cell efficiency that is consistent with low cost, high volume fabrication techniques are critical for future NASA space missions.

In this project, we propose a novel, ultra-thin (UT), Si photovoltaic cell technology that combines enhanced light trapping (LT) and absorption due to nanostructured surfaces, separation of photogenerated carriers by carrier selective contacts (CSC), and increased carrier density due to multiple exciton generation (MEG). Such solar cells have a potential to achieve the efficiencies of 40+%, while being rad-hard, lightweight, flexible, and low–cost, due to use of Si high volume techniques.

CFDRC will partner with the QESST ERC center at Arizona State University (ASU) to develop and demonstrate a novel, ultra-thin, nanostructured Si photovoltaic cell technology.
Phase I project will include modeling and experimental design, for a UT flexible Si based solar cell, that can achieve >25% AM0 conversion efficiency. Additionally, several approaches will be investigated to improve Si solar cell radiation hardness/tolerance.

In Phase II, the physical mechanisms currently limiting light trapping, open-circuit voltage (Voc), and MEG will be identified, and addressed. The UT rad-hard cell design will be optimized (for > 36% efficiency) and a solar cell will be fabricated and presented for testing.

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

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