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- W2904752406 abstract "A multi-diameter p-i-n junction GaAs nanowire (NW) array architecture is proposed for high-performance solar cells. Coupled three-dimensional optoelectronic simulations are performed to investigate the photovoltaic properties. The NW diameters are randomly selected within the range of 220-400 nm, following the Gaussian distribution. The results show that the absorption strongly depends on the diameter, and the multi-diameter NW array exhibits higher optical absorption, in comparison with the uniform-diameter counterpart. This is because of the superposition of multiple absorption peaks. Moreover, the multi-diameter NW array can efficiently enhance the effective absorption; that is, the depletion region absorption, which directly leads to increased photocurrent. A remarkable efficiency of 17% is obtained for a 16-diameter NW array solar cell with a full width at half maximum of the diameter distribution of 75 nm, higher than the best value (16.1%) of uniform-diameter device with an optimum diameter of 310 nm. This work demonstrates that the native diameter nonuniformity of self-organized nanowires is beneficial for high-performance photovoltaics with low cost and a simple fabrication process." @default.
- W2904752406 created "2018-12-22" @default.
- W2904752406 creator A5023004223 @default.
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- W2904752406 date "2018-12-19" @default.
- W2904752406 modified "2023-10-18" @default.
- W2904752406 title "Enhanced photovoltaic performance of nanowire array solar cells with multiple diameters" @default.
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- W2904752406 doi "https://doi.org/10.1364/oe.26.00a974" @default.
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