Lightweight InP Solar Cells for Space Applications

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,992.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
NNX08CB46P
Agency Tracking Number:
075589
Solicitation Year:
2007
Solicitation Topic Code:
S3.03
Solicitation Number:
n/a
Small Business Information
MicroLink Devices
6457 Howard Street, Niles, IL, 60714-3301
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
135553472
Principal Investigator:
Noren Pan
Principal Investigator
(847) 588-3001
npan@mldevices.com
Business Contact:
Noren Pan
President
(847) 588-3001
npan@mldevices.com
Research Institution:
n/a
Abstract
The innovation in this Phase I SBIR is the development of a technology which will enable the manufacture of a lightweight, low cost, InP based compound semiconductor material containing high efficiency multijunction solar cells suitable for deployment in very high altitude, very long endurance solar aircraft. The key technological step is the application of a production-worthy epitaxial liftoff (ELO) process to a multijunction solar cell structure fabricated on a large area InP substrate. Our focus will be on InP-based solar cells, in particular lattice-matched dual junction solar cell of InP and InGaAsP materials, because of the demonstrated radiation hardness of these materials. We will develop a road map towards InP solar cells capable of >30% conversion efficiency under AM0 illumination. We will also design a process by which thin epitaxial InP solar cell layers will be transferred onto very flexible conductive or non-conductive substrates. The resulting solar cell structures are expected to have a specific power >600 W/kg, to be capable of operating over temperatures in the range -80 ºC to 120 ºC and to have excellent reliability while exposed to space radiation levels

* information listed above is at the time of submission.

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