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2 May 2012Analysis of surface recombination in nanowire array solar cells
In this work, microscopic three-dimensional (3D) simulations were performed on nanowire array solar cells to
study the impact of surface recombination on the photovoltaic performance. Both axially and radially arranged
p-n junction in III-V based structures were taken into consideration. From the cases with surface recombination
velocity varying from 1e3cm/s to 1e6cm/s, the core-shell nanowire was found to provide better tolerance for
surface recombination. The difference of surface recombination within the axial and core-shell structures is
explained by analyzing the relevent minority carrier density, followed by a discussion on the impact of surface
recombination on the performance of nanowires as photovoltaic devices.
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Shuqing Yu, Friedhard Roemer, Bernd Witzigmann, "Analysis of surface recombination in nanowire array solar cells," Proc. SPIE 8438, Photonics for Solar Energy Systems IV, 84380O (2 May 2012); https://doi.org/10.1117/12.922458