2013
DOI: 10.1088/1367-2630/15/9/093029
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Antenna-enhanced and polarization sensitive photoresponse in arrays of silicon P–i–N nanowires

Abstract: We analyze a novel antenna effect that resonantly enhances the photocurrent response of end-contacted P-i-N junction nanowire gratings, due to coupling of incident radiation into the grating's multiple-scattering electromagnetic modes. Quantitative characterization of these resonances was performed by spectral and polarization-resolved photocurrent measurements on gratings with N = 500, 200 and 100 nanowires, aided by electron beaminduced current measurements, and in excellent agreement with electromagnetic sc… Show more

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