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Title: Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

Abstract

This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

Inventors:
 [1];  [2];  [2]
  1. Middle Grove, NY
  2. Clifton Park, NY
Publication Date:
Research Org.:
KAPL, Inc
Sponsoring Org.:
USDOE
OSTI Identifier:
989499
Patent Number(s):
7,790,978
Application Number:
11/548,843
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION

Citation Formats

Dziendziel, Randolph J, Baldasaro, Paul F, and DePoy, David M. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system. United States: N. p., 2010. Web.
Dziendziel, Randolph J, Baldasaro, Paul F, & DePoy, David M. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system. United States.
Dziendziel, Randolph J, Baldasaro, Paul F, and DePoy, David M. Tue . "Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system". United States. https://www.osti.gov/servlets/purl/989499.
@article{osti_989499,
title = {Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system},
author = {Dziendziel, Randolph J and Baldasaro, Paul F and DePoy, David M},
abstractNote = {This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {9}
}

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Works referenced in this record:

Thermodynamic analysis of thermophotovoltaic efficiency and power density tradeoffs
journal, March 2001

  • Baldasaro, P. F.; Raynolds, J. E.; Charache, G. W.
  • Journal of Applied Physics, Vol. 89, Issue 6
  • DOI: 10.1063/1.1344580

Thermophotovoltaics-development status and parametric considerations for power applications
conference, January 1999

  • Black, R. E.; Baldasaro, P. F.; Charache, G. W.
  • Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)
  • DOI: 10.1109/ICT.1999.843469

Sputtered Si:H alloys for edge filters: application to thermophotovoltaics
journal, January 2002

  • Martin, Peter M.; Olsen, Larry C.; Johnston, John W.
  • Applied Optics, Vol. 41, Issue 31
  • DOI: 10.1364/AO.41.006702