Abstract
This paper introduces and numerically analyzes flower-shaped nanowires (FS-NWs) with improved light harvesting. The optical and electrical characteristics are studied using the finite-difference time-domain and finite-element methods. In this study, the ultimate efficiency (η), optical generation (G), short circuit current density (JSC), open-circuit voltage (Voc), and electrical power conversion efficiency (PCE) are numerically computed. The geometrical parameters of the suggested FS-NWs are tuned to improve the optical absorption and hence the ultimate efficiency. The FS-NWs show higher absorption than the conventional cylindrical NWs (CC-NWs) due to the multiple resonance peaks and higher cross-section scattering in the high photon energy band. The reported FS-NWs provide an optical efficiency (η) of 35.6%, with an improvement of 11.4% over CC-NWs. This is due to the capability of the FS-NWs to trap more photons and generate more supported modes through the active absorbing layer. The reported design with axial doping junction offers an open-circuit voltage (Voc) of 0.68 V, short circuit current density (JSC) of 18.68 mA/cm2, and PCE of 9.6%, which are better than that of CC-NWs with Voc of 0.70 V, JSC of 17.88 mA/cm2, and PCE of 8.68%.
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The authors acknowledge the financial support by the Academy of Scientific Research and Technology (ASRT) at Egypt under the South Africa-Egypt Cooperation.
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AHM, MFOH and MH have proposed the idea. AHM has done the simulations of the reported NW. All authors have contributed to the analysis, discussion, writing and revision of the paper.
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Mahmoud, A.H.K., Hameed, M.F.O., Hussein, M. et al. Optical and electrical characteristics of highly efficient flower-shaped silicon nanowires solar cell. Opt Quant Electron 55, 341 (2023). https://doi.org/10.1007/s11082-022-04481-2
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DOI: https://doi.org/10.1007/s11082-022-04481-2