Efficient Thermally Stable Spectral Control Filters for Thermophotovoltaics

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC07QA38P
Agency Tracking Number: 065553
Amount: $99,235.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solitcitation Year: 2006
Solitcitation Topic Code: S2.03
Solitcitation Number: N/A
Small Business Information
Rugate Technologies Inc
353 Christian Street, Oxford, CT, 06478-1053
Duns: 949115208
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Thomas Rahmlow
 Principal Investigator
 (203) 267-3154
 trahmlow@rugate.com
Business Contact
 Jeanne Lazo-Wasem
Title: Business Official
Phone: (203) 267-3154
Email: jlazo-wasem@rugate.com
Research Institution
N/A
Abstract
The feasibility of radioisotope thermophotovoltaic (RTPV) power systems has been shown. The best efficiencies reported to date for a TPV module test include front surface spectral control filters. This program will address the technical challenges to developing and qualifying highly efficient spectral control filters that can survive high temperatures(above 150 degrees C)for long periods of time. In earlier work, we have identified thermally stable filter materials and demonstrated their use as high index filter materials, however they are quite sensitive to deposition conditions. In this program, we will (1)optimize deposition conditions to improve reliability, repeatability, uniformity, and filter performance, (2)develop and optimize filter designs for radioisotope power, (3)conduct extended high temperature, long life, radiation, and environmental durability testing, (4)identify other potential high temperature materials, (5) address the use of multiple spectral control architectures including spectrally selective emitters, back surface reflectors (BSR) and photonic crystals, and (5) integrate the spectral control architectures with RTPV technology to address NASA missions.

* information listed above is at the time of submission.

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