Performance evaluation of a GaSb thermophotovoltaic converter

Auteurs :  F. Bouzid, L. Dehimi
Année : 2012
Domaine : Physique
Type : Article de journal
Revue : Revue des énergies renouvelables
Résumé en PDF :  (résumé en pdf)
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Mots clés : Thermophotovoltaic, GaSb, Reflectance, Emissivity, Temperature

Résumé : 

In recent years, Gallium Antimonide (GaSb), which has smallest bandgap among III-V semiconductors family, became the subject of extensive investigations in the field of thermophotovoltaic (TPV) converters, because of the recent improvements in optoelectronic technology. This paper describes an analytical process used to evaluatethe performance of a GaSb TPV converter under different levels of illumination, taking account of the photons with energy below the cells bandgap by considering the cell’s reflectance to this fraction of incident radiation. The results show that a radiator temperature near 2200 K is most advantageous and a reflectance of 0.98 is necessary for below-bandgap irradiations to obtain conversion efficiency greater than 28%, at 300 K cell temperature. This efficiency will decrease as the cell temperature increase. The obtained results are found to be in good agreement with the available data.