In this work, we introduce a solar rectenna that is combined with a periodic subwavelength spiral antenna and a metal-oxide-semiconductor photon-assisted tunneling diode. We obtain spectral absorption and electromagnetic field distributions by numerical simulations and calculate the tunneling current densities generated by solar rectenna. The results indicate that broadband absorption with a peak value over 0.99 is achieved in the range of 400-2500 nm. Additionally, the figure of merit for tunneling electric field enhancement reaches over 10
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Zhou et al. (2024) studied this question.
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