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Fundamental limits in the external quantum efficiency of single nanowire solar cells
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10.1063/1.3672168
/content/aip/journal/apl/99/26/10.1063/1.3672168
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/26/10.1063/1.3672168
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Sketch of the simulated experimental condition of a hexagonal nanowire placed on a planar substrate and illuminated with a plane wave light perpendicular to the substrate surface. (b) Sketch of the 2D-simulation geometry. The net energy flux through a box around the nanowire (red arrows) is evaluated and normalized through the flux through the projected area of the nanowire on the substrate.

Image of FIG. 2.
FIG. 2.

(Color online) Ratio of external quantum efficiency to internal quantum efficiency (EQE/IQE) in dependence of photon energy for cases of nanowire in air (▴), on glass substrate (▪) and on an ideally reflecting metal surface (•). The open symbols correspond to crystalline silicon nanowires while the filled symbols correspond to crystalline GaAs. The data shown corresponds to incident light polarized parallel to the nanowire axis and a wire diameter of 80 nm. The inset shows the calculated electric field energy distribution for selected data points indicated by the arrows.

Image of FIG. 3.
FIG. 3.

(Color online) Photons absorbed in the nanowire normalized to the geometrically incident flux of photons of an AM1.5 G solar spectrum on the projected surface area. Only photons with an energy above the band-gap are considered. The data is shown in dependence of wire diameter for cases of nanowire in air (▴), on glass substrate (▪) and on an ideally reflecting metal surface (•). The open symbols correspond to crystalline silicon nanowires while the filled symbols correspond to crystalline GaAs.

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/content/aip/journal/apl/99/26/10.1063/1.3672168
2011-12-27
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fundamental limits in the external quantum efficiency of single nanowire solar cells
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/26/10.1063/1.3672168
10.1063/1.3672168
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