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High Efficiency Quantum Well Waveguide Solar Cells

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Magnolia Solar Inc.
54 Cummings Park Suite 316 Woburn, MA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: High Efficiency Quantum Well Waveguide Solar Cells
Agency: NASA
Contract: NNX11CE59P
Award Amount: $99,999.00


The long-term objective of this program is to develop flexible, lightweight, single-junction solar cells using quantum structured designs that can achieve ultra-high efficiencies (approaching 45%) while avoiding the current matching issues that plague high-efficiency multi-junction devices. Ultra-low dark currents and record-high open circuit voltages have recently been achieved with a novel III-V material structure that includes both an InGaAs quantum well absorber and an extended wide band gap emitter. By enhancing absorption in the narrow band gap well, power conversion efficiencies in single-junction quantum solar cells can potentially exceed those of multi-junction photovoltaic devices. The objective of the Phase I SBIR effort is to design and prototype a high performance quantum well solar cell device incorporating advanced light trapping techniques. To enhance light trapping, we will leverage both an established epitaxial liftoff process and unique optical coatings to scatter light laterally into waveguide modes within the InGaAs well region of the device.

Principal Investigator:

Roger E. Welser
Principal Investigator

Business Contact:

Roger E. Welser
Business Official
Small Business Information at Submission:

Magnolia Solar, Inc.
54 Cummings Park, Suite 316 Woburn, MA 01801-2123

EIN/Tax ID: 800185234
Number of Employees:
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No