PHOTOVOLTAIC SYSTEMS BASED ON SPECTRALLY SELECTIVE CONCENTRATORS

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$493,000.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
15673
Agency Tracking Number:
15673
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
18 Flagg Road, Hollis, NH, 03049
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Jacques Ludman
Principal Investigator
(603) 465-3361
Business Contact:
() -
Research Institution:
n/a
Abstract
WE HAVE DEVELOPED A HOLOGRAPHIC DEVICE THAT GREATLY IMPROVES THE EFFICIENCY OF SOLAR ENERGY GENERATION. THE SINGLE-ELEMENT HOLOGRAM FOCUSES LIGHT TO THE SIDE AND ALSO SPECTRALLY SPLITS IT. THE OUTPUT APPEARS AS A THIN, CONCENTRATED LINE FOCUS PERPENDICULAR TO THE HOLOGRAM AND DISPLACED TO THE SIDE. DIFFERENT WAVELENGTHS ARE DIFFRACTED, CONCENTRATED, AND DISPERSED TO DIFFERENT LOCATIONS ON THE LINE. THE LINE RESEMBLES AN ELEGANT RAINBOW IN THE VISIBLE. THE HOLOGRAM LETS EACH OF TWO OR MORE DIFFERNT SOLAR CELLS ABSORB ONLY THOSE WAVELENGTHS THAT IT CAN EFFICIENTLY CONVERT TO ELECTRIC POWER. THE DEVICE ALSO PREVENTS OVERHEATING BY DIFFRACTING UNWANTED INFRARED AWAY FROM THE CELLS. THE SIDE FOCUS ELIMINATES SHADOW EFFECTS, AND COOLING IS EASY, SINCE THE CELLS ARE NOT CASCADED AND THE HEAT LOAD IS MINIMAL. THIS NOVEL SYSTEM IS IDEAL FOR CONCENTRATING, SPECTRUM SPLITTING, HIGH EFFICIENCY POWER GENERATION.

* information listed above is at the time of submission.

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