Theoretical comparison of rare-earth garnet selective emitters

Theoretical comparison of rare-earth garnet selective emitters

Spectral control through the use of selective emitters is an important means of improving the efficiency of thermophotovoltaic (TPV) systems. The rare-earth-aluminum garnet selective emitters developed in our laboratory offer a number of potential advantages for use in such systems. In this paper, w...

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Bibliographische Detailangaben
Hauptverfasser: Good, B.S., Chubb, D.L., Wolford, D.S.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Aluminum
Boundary conditions
Conductive films
Extinction coefficients
Garnets
Optical films
Scattering
Substrates
Temperature
Thermal conductivity
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Beschreibung
Zusammenfassung:Spectral control through the use of selective emitters is an important means of improving the efficiency of thermophotovoltaic (TPV) systems. The rare-earth-aluminum garnet selective emitters developed in our laboratory offer a number of potential advantages for use in such systems. In this paper, we present results of a detailed computational study of the effects of thermal gradients, along with some other film parameters, on the performance of three rare-earth-doped aluminum garnet selective emitters, specifically, Er/sub 3/Al/sub 5/O/sub 12/, Ho/sub 3/Al/sub 5/O/sub 12/, and Tm/sub 3/Al/sub 5/O/sub 12/.
ISSN:0160-8371
DOI:10.1109/PVSC.2000.916109