High Efficiency Quantum Well Waveguide Solar Cells

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,999.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CE59P
Award Id:
n/a
Agency Tracking Number:
105073
Solicitation Year:
2010
Solicitation Topic Code:
X8.04
Solicitation Number:
n/a
Small Business Information
54 Cummings Park, Suite 316, Woburn, MA, 01801-2123
Hubzone Owned:
N
Minority Owned:
Y
Woman Owned:
N
Duns:
828761762
Principal Investigator:
Roger Welser
Principal Investigator
(781) 767-7042
rwelser@magnoliasolar.com
Business Contact:
Roger Welser
Business Official
(781) 767-7042
rwelser@magnoliasolar.com
Research Institution:
Stub




Abstract
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.

* information listed above is at the time of submission.

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