Toward ultrahigh-flux photovoltaic concentration

Gordon, Jeffrey M.; Katz, Eugene A.; Feuermann, Daniel; Huleihil, Mahmoud
May 2004
Applied Physics Letters;5/3/2004, Vol. 84 Issue 18, p3642
Academic Journal
We report experimental results with a miniature fiber-optic photovoltaic concentrator with (a) deliverable power density up to 104 suns (10 W/mm2), (b) solar cell efficiencies above 30%, (c) completely passive cooling, (d) uniform and individualized cell illumination, and (e) assembly from readily available components. Measurements include the sensitivity of the conversion efficiency of tandem III–V cells to (1) power input, (2) flux distribution, and (3) the modified spectrum from the fiber-optic concentrators. Our results augur favorably for the feasibility of such designs at concentration levels as high as thousands of suns. © 2004 American Institute of Physics.


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