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Polarization anisotropy of individual core/shell GaAs/AlGaAs nanowires by photocurrent spectroscopy
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10.1063/1.3578189
/content/aip/journal/apl/98/15/10.1063/1.3578189
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/15/10.1063/1.3578189
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Figures

Image of FIG. 1.
FIG. 1.

(a) SEM image of a NW deposited on interdigitated electrodes and contacted by EBID. (b) characteristics under dark conditions, and under 560 nm monochromatized light polarized parallel and perpendicular to the NW axis; the inset shows their ratio. (c) Dependence of the NW photocurrent on the polarization angle relative to the NW long axis at the excitation wavelength of 560 nm and the applied voltage of . (d) Photocurrent dependence on the optical intensity under 560 nm monochromatized light with polarization parallel and perpendicular to the NW axis at the applied voltage .

Image of FIG. 2.
FIG. 2.

Spectral dependence of the EQE under unpolarized, parallel polarization, and perpendicular polarization with respect to the NW axis at the applied voltage .

Image of FIG. 3.
FIG. 3.

Spectral dependence of the polarization anisotropy , where and are photocurrent intensities (reported in Fig. 2) under light polarized parallel and perpendicularly to the NW axis, respectively. A sketch of the effective diameter variation around 670 nm is also reported.

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/content/aip/journal/apl/98/15/10.1063/1.3578189
2011-04-12
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Polarization anisotropy of individual core/shell GaAs/AlGaAs nanowires by photocurrent spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/15/10.1063/1.3578189
10.1063/1.3578189
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