Title :
Theoretical comparison of rare-earth garnet selective emitters
Author :
Good, Brian S. ; Chubb, Donald L. ; Wolford, David S.
Author_Institution :
NASA Glenn Res. Center, Cleveland, OH, USA
Abstract :
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, Er3Al5O12 , Ho3Al5O12, and Tm3Al 5O12
Keywords :
aluminium compounds; erbium compounds; holmium compounds; light scattering; thermophotovoltaic cells; thulium compounds; Er3Al5O12; Ho3Al5O12; TPV systems; Tm3Al5O12; film emittance model; film parameters; film thickness effects; rare-earth garnet selective emitters; scattering effects; selective emitters; spectal emittance; spectral control; thermal gradients; thermophotovoltaic systems; Aluminum; Boundary conditions; Conductive films; Extinction coefficients; Garnets; Optical films; Scattering; Substrates; Temperature; Thermal conductivity;
Conference_Titel :
Photovoltaic Specialists Conference, 2000. Conference Record of the Twenty-Eighth IEEE
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-5772-8
DOI :
10.1109/PVSC.2000.916109
