SBIR Phase I: Direct Conversion of Heat to Electricity with Nanowire Antenna Arrays

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: 0232638
Agency Tracking Number: 0232638
Amount: $99,991.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
8130 Shaffer Parkway, Littleton, CO, 80127
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Lin Simpson
 () -
Business Contact
Phone: () -
Research Institution
This Small Business Innovation Research (SBIR) Phase I project will demonstrate the feasibility of collecting and converting to DC power infrared radiation (IR) from heated sources using monolithically integrated, nanowire antenna/rectifying diode arrays (IR-AAID). Using scaleable, self-organizing, and inexpensive electrochemical processing on low cost substrates, the antenna/diode systems can be engineered to convert IR radiation from a particular heat source/emitter with specific characteristics by simply changing the antenna geometry. Unlike traditional semiconductor-based IR photovoltaic materials with their associated low efficiencies, high material costs, temperature sensitivity and matched high temperature emitter requirements, an IR-AAID system could potentially convert heat to electricity at over 40% efficiency. The best IR photovoltaic modules typically operate at less than 5% efficiency, require 1200 to 2000 Celsius emitter temperatures to match available band gaps, and require very expensive materials with chemically tailored compositions to match specific energy applications. The commercial and broader impacts of this technology will be low-cost nanowire arrays with high density and tunable diameter/length aspect ratios over a relatively large area for heat collection applications. These applications will vary from portable power packs that use low temperature heat, to the generation of electricity from high temperature nuclear and conventional heat sources where noise or other environmental concerns are an issue.

* Information listed above is at the time of submission. *

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