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Nanowire array photovoltaics: Radial disorder versus design for optimal efficiency

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 نشر من قبل Bj\\\"orn C. P. Sturmberg
 تاريخ النشر 2014
  مجال البحث فيزياء
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Solar cell designs based on disordered nanostructures tend to have higher efficiencies than structures with uniform absorbers, though the reason is poorly understood. To resolve this, we use a semi-analytic approach to determine the physical mechanism leading to enhanced efficiency in arrays containing nanowires with a variety of radii. We use our findings to systematically design arrays that outperform randomly composed structures. An ultimate efficiency of 23.75% is achieved with an array containing 30% silicon, an increase of almost 10% over a homogeneous film of equal thickness.



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