High specific power flexible integrated IMM photovoltaic blanket

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$124,981.00
Award Year:
2012
Program:
SBIR
Phase:
Phase I
Contract:
NNX12CE09P
Agency Tracking Number:
115648
Solicitation Year:
2011
Solicitation Topic Code:
X8.04
Solicitation Number:
n/a
Small Business Information
Nanohmics, Inc.
6201 East Oltorf Street, Suite 400, Austin, TX, 78741-7511
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
100651798
Principal Investigator:
Qizhen "Jim" Xue
Principal Investigator
(512) 389-9990
qxue@nanohmics.com
Business Contact:
Michael Mayo
Business Official
(512) 389-9990
mmayo@nanohmics.com
Research Institution:
Stub




Abstract
Originally designed for space applications, multi-junction solar cells have a high overall power conversion efficiency (>30%) which compares favorably to amorphous silicon, CIGS and bulk heterojunction photovoltaic devices which are limited to<10%. Recent advances in manufacturing of Inverted Metamorphic Multi-junction (IMM) solar cells have opened new opportunities to greatly improve the specific power of the devices by means of removal of the epitaxial substrate. To date, flexible high efficiency IMMs have been fabricated and demonstrated in the framework of a space cell with IMMs released from the epitaxial substrate onto traditional coverglass. An increasing larger body of research is aimed at populating large area "blankets" with IMMs and this has led to a number of approaches that includes removal of rigid epitaxy growth substrates and adherence to lightweight flexible webs or polymer films. So far, there is no economic and fast approach to efficiently remove the growth substrate.Nanohmics proposes to develop a non-destructive approach for transfer of IMM solar devices from rigid growth substrates into flexible high specific power solar cell blankets. The method will enable integration of state-of-the-art photovoltaics into a large area conformal "blanket" for space applications. The proposed effort will include development of a novel sacrificial intermediate layer on which high efficiency IMM photovoltaics are epitaxially deposited.

* information listed above is at the time of submission.

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