Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

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Description

A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the ... continued below

Physical Description

31 p.

Creation Information

Brown, E.J.; Baldasaro, P.F. & Dziendziel, R.J. December 31, 1996.

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This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this patent can be viewed below.

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Description

A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}.

Physical Description

31 p.

Notes

OSTI as DE98007416

Source

  • Other Information: PBD: 1996

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  • Other: DE98007416
  • Report No.: PATENTS-US--A8678741
  • Grant Number: AC12-76SN00052
  • Office of Scientific & Technical Information Report Number: 663493
  • Archival Resource Key: ark:/67531/metadc709306

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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • May 16, 2016, 6:31 p.m.

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Brown, E.J.; Baldasaro, P.F. & Dziendziel, R.J. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system, patent, December 31, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc709306/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.