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A comparison of light-harvesting performance of silicon nanocones and nanowires for radial-junction solar cells.


ABSTRACT: Silicon nanorod based radial-junction solar cells are competitive alternatives to traditional planar silicon solar cells. In various silicon nanorods, nanocone is always considered to be better than nanowire in light-absorption. Nevertheless, we find that this notion isn't absolutely correct. Silicon nanocone is indeed significantly superior over nanowire in light-concentration due to its continuous diameters, and thus resonant wavelengths excited. However, the concentrated light can't be effectively absorbed and converted to photogenerated carriers, since its propagation path in silicon nanocone is shorter than that in nanowire. The results provide critical clues for the design of silicon nanorod based radial-junction solar cells.

SUBMITTER: Li Y 

PROVIDER: S-EPMC4481639 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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