Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system
Abstract
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}. 10 figs.
- Inventors:
- Issue Date:
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 567171
- Patent Number(s):
- 5700332
- Application Number:
- PAN: 8-678,741
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 23 Dec 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; THERMOPHOTOVOLTAIC CONVERTERS; ELECTROMAGNETIC FILTERS; DESIGN; TRANSMISSION; REFLECTION
Citation Formats
Brown, E J, Baldasaro, P F, and Dziendziel, R J. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system. United States: N. p., 1997.
Web.
Brown, E J, Baldasaro, P F, & Dziendziel, R J. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system. United States.
Brown, E J, Baldasaro, P F, and Dziendziel, R J. Tue .
"Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system". United States.
@article{osti_567171,
title = {Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system},
author = {Brown, E J and Baldasaro, P F and Dziendziel, R J},
abstractNote = {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}. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 23 00:00:00 EST 1997},
month = {Tue Dec 23 00:00:00 EST 1997}
}