Title :
Spectral Characterization of Mini Concentrator Optics for its Use With MJ Cells
Author :
Dominguez, C. ; Anton, I. ; Sala, G. ; Alvarez, J.L. ; Diaz, V.
Author_Institution :
Inst. de Energia Solar, Ciudad Univ., Madrid
Abstract :
New concepts of concentrator modules have been proposed in the last years based on refractive optics and cost effective III-V devices at high concentration levels. The small size of the cells, the high concentration ratio and the compact aspect of the optics are some of the particular characteristics of these C-systems. In this paper we face out the optical characterization of these mini concentrator systems. A new method is proposed for indoor characterization of the spectrally dependent optical efficiency, which allows to obtain the integrated optical efficiency with any light spectrum and to calculate the electrical efficiency with multi-junction solar cells. Influence of the spectral transmittance of an optics on 2J cells current mismatch has been assessed
Keywords :
solar cells; solar energy concentrators; spectral analysis; C-system; III-V devices; MJ cell; electrical efficiency; integrated optical efficiency; light spectrum; mini concentrator optics; multijunction solar cell; optical characterization; refractive optics; spectral transmittance; III-V semiconductor materials; Integrated optics; Lamps; Manufacturing; Optical distortion; Optical receivers; Optical refraction; Optical sensors; Photovoltaic cells; Sun;
Conference_Titel :
Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
1-4244-0017-1
Electronic_ISBN :
1-4244-0017-1
DOI :
10.1109/WCPEC.2006.279545
