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Comparing nanowire, multijunction, and single junction solar cells in the presence of light trapping

Catchpole, K. R., Mokkapati, Sudha and Beck, F. J. 2011. Comparing nanowire, multijunction, and single junction solar cells in the presence of light trapping. Journal of Applied Physics 109 (8) , 084519. 10.1063/1.3579420

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Abstract

In this paper we quantify the constraints and opportunities for radial junction nanowire solar cells, compared to single junction and multijunction solar cells, when light trapping is included. Both nanowire and multijunction designs are reliant on a very low level of traps in the junction region, and without this, single junction designs are optimal. If low trap density at the junction can be achieved, multijunction cells lead to higher efficiencies than nanowire cells for a given diffusion length, except in the case of submicron diffusion lengths. Thus the radial junction structure is not in itself an advantage in general, though if nanowires allow faster deposition or better light trapping than other structures they could still prove advantageous.

Item Type: Article
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Institute of Physics
ISSN: 0021-8979
Last Modified: 11 Jan 2018 09:43
URI: http://orca-mwe.cf.ac.uk/id/eprint/108091

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