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Title: Selective emitters for thermophotovoltaic energy converters -- A study based on material prospects

Abstract

A thermophotovoltaic (TPV) energy converter is a system used to convert thermal energy to electric energy. The system consists of a thermally excited photon emitter and photovoltaic (PV) cell. A thermally excited selective line emitter (rare earth oxide emitter) is a photon source which provides photons at elevated temperatures with a narrow energy band that can be matched with the PV cell bandgap energy. The PV cells can then convert photon energy to electricity at high efficiency. Past research on fibrous rare earth oxide selective emitters has shown that high emitter efficiency was attained at the expense of emitter mechanical strength. Therefore, an improvement of the emitter strength without sacrificing its emitter efficiency becomes one of the key issues in TPV research. This paper describes novel material processing approaches to produce reasonably strong rare earth emitters with high efficiency. The effect of the amount of rare-earth oxide and the material structure (fibrous and solid) on the selective efficiency of the emitters has been addressed in some detail. Also, emitters containing two rare earth (Er/Tm) were investigated.

Authors:
; ;  [1]
  1. Space Power Inst., Auburn, AL (United States)
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States); Department of the Army, Washington, DC (United States)
OSTI Identifier:
435555
Report Number(s):
CONF-960805-
TRN: IM9710%%213
DOE Contract Number:  
FG05-95ER12156
Resource Type:
Conference
Resource Relation:
Conference: 31. intersociety energy conversion engineering conference, Washington, DC (United States), 9-14 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 31. intersociety energy conversion engineering conference. Volume 2: Conversion technologies, electro-chemical technologies, Stirling engines, thermal management; Chetty, P.R.K.; Jackson, W.D.; Dicks, E.B. [eds.]; PB: 867 p.
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; THERMOPHOTOVOLTAIC CONVERTERS; PHOTON EMISSION; RARE EARTH COMPOUNDS; OXIDES; MECHANICAL PROPERTIES; ERBIUM OXIDES; THULIUM OXIDES; EFFICIENCY; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Chen, Z, Adair, P L, and Rose, M F. Selective emitters for thermophotovoltaic energy converters -- A study based on material prospects. United States: N. p., 1996. Web.
Chen, Z, Adair, P L, & Rose, M F. Selective emitters for thermophotovoltaic energy converters -- A study based on material prospects. United States.
Chen, Z, Adair, P L, and Rose, M F. Tue . "Selective emitters for thermophotovoltaic energy converters -- A study based on material prospects". United States.
@article{osti_435555,
title = {Selective emitters for thermophotovoltaic energy converters -- A study based on material prospects},
author = {Chen, Z and Adair, P L and Rose, M F},
abstractNote = {A thermophotovoltaic (TPV) energy converter is a system used to convert thermal energy to electric energy. The system consists of a thermally excited photon emitter and photovoltaic (PV) cell. A thermally excited selective line emitter (rare earth oxide emitter) is a photon source which provides photons at elevated temperatures with a narrow energy band that can be matched with the PV cell bandgap energy. The PV cells can then convert photon energy to electricity at high efficiency. Past research on fibrous rare earth oxide selective emitters has shown that high emitter efficiency was attained at the expense of emitter mechanical strength. Therefore, an improvement of the emitter strength without sacrificing its emitter efficiency becomes one of the key issues in TPV research. This paper describes novel material processing approaches to produce reasonably strong rare earth emitters with high efficiency. The effect of the amount of rare-earth oxide and the material structure (fibrous and solid) on the selective efficiency of the emitters has been addressed in some detail. Also, emitters containing two rare earth (Er/Tm) were investigated.},
doi = {},
url = {https://www.osti.gov/biblio/435555}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {12}
}

Conference:
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