Conductive ZnMgO Enabling High-Efficiency Wide-Bandgap Photovoltaics

Award Information
Agency:
Department of Defense
Branch
Office of the Secretary of Defense
Amount:
$99,857.00
Award Year:
2007
Program:
SBIR
Phase:
Phase I
Contract:
FA9453-07-M-0136
Agency Tracking Number:
O071-ES3-1036
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
ASCENT SOLAR TECHNOLOGIES
8120 Shaffer Parkway, Littleton, CO, 80127
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
783228344
Principal Investigator:
Lawrence Woods
Program Manager
(303) 285-5135
lwoods@ascentsolar.com
Business Contact:
Janet Casteel
Chief Accounting Officer
(303) 285-5111
jcasteel@ascentsolar.com
Research Institution:
n/a
Abstract
Ascent Solar Technologies (AST) proposes to develop atmospheric pressure chemical vapor deposition (APCVD) of zinc-magnesium-oxide (ZnMgO) as an n-type transparent conducting oxide (TCO) for the top contact that will match the material properties of new buffer and window layers being developed for new wide-bandgap devices. AST's innovative approach proposes to make the definitive light-absorber layer for high-power, lightweight and flexible thin-film photovoltaics (TFPV). The baseline AST product utilizes single-junction devices with low-bandgap CuInSe2 (CISe) alloys, however better TFPV module performance is predicted through the use of wide-bandgap alloy variations of the CISe based solar absorber. AST has been developing wide-bandgap alloys of CISe based solar absorbers using both aluminum and gallium for simultaneous optimization of the bandgap and material properties. To date, most wide-bandgap device development has used traditional device layers that are optimal for low-bandgap solar absorbers, but are not well matched for wide-bandgap absorbers. In addition, AST will utilize novel lightweight and flexible substrates that are also being developed at AST. Ultra-high TFPV device efficiencies and specific power (> 1500 W/kg) could result from the combined device and substrate technology, exceeding state-of-the-art terrestrial TFPV module efficiencies (at operational temperatures), and enabling terrestrial, spacecraft, balloon and unmanned aircraft technologies.

* information listed above is at the time of submission.

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