Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4775578
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Funding
- National Natural Science Foundation of China [61204066, 91233119]
- Thousand Young Talents Program of China
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
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Single-nanowire solar cells (SNSCs) in lying configuration can have external quantum efficiency (EQE) over 100% but always in narrowbands with EQE peaks slightly exceeding unit. We presented a rectangular gallium arsenide (GaAs) SNSC, which provides light absorption efficiency (Q(abs)) and EQE far beyond 100% for both transverse electric and magnetic illuminations, by optimally engineering the nanowires and introducing an advanced nanoshell design. Electromagnetic and carrier transport calculations show that Q(abs) and EQE peaks of the designed SNSCs can both be over 200% with averaged EQE similar to 150% in most of the active spectral band of GaAs. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4775578]
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