Photovoltaic concentration at ultra-high flux

Jeffrey M. Gordon; Eugene A. Katz; Daniel Feuermann; Mahmoud Huleihil

doi:10.1117/12.556681

29 September 2004 Photovoltaic concentration at ultra-high flux

Jeffrey M. Gordon, Eugene A. Katz, Daniel Feuermann, Mahmoud Huleihil

Proceedings Volume 5529, Nonimaging Optics and Efficient Illumination Systems; (2004) https://doi.org/10.1117/12.556681
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Experimental results generated with novel miniature fiber-optic concentrators and commercial tandem III-V concentrator solar cells are reported, including (1) measured power densities up to 10,000 suns, (2) solar cell efficiencies in excess of 30% and (3) totally passive cooling. Mini-dish concentrators (a) generate uniform and individualized cell illumination, (b) allow assembly from readily available elements, and (c) are devoid of chromatic aberration. Measurements include the sensitivity of conversion efficiency to (i) power input, (ii) extreme flux inhomogeneities and (iii) the modified spectrum from fiber-optic concentrators. The weak sensitivity of cell performance to acute non-uniformities in flux map is addressed with a relatively simple model that regards the cell as an effective parallel connection of its uniformly irradiated areal elements. Our findings bode favorably for the feasibility of such concentrator designs at concentration levels as high as thousands of suns.

Citation Download Citation

Jeffrey M. Gordon, Eugene A. Katz, Daniel Feuermann, and Mahmoud Huleihil "Photovoltaic concentration at ultra-high flux", Proc. SPIE 5529, Nonimaging Optics and Efficient Illumination Systems, (29 September 2004); https://doi.org/10.1117/12.556681

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