First-principles design of efficient solar cells using two-dimensional arrays of core-shell and layered SiGe nanowires

Pekoz, R.
Malcıoğlu, Osman Barış
Raty, J. -Y.
Research for third generation solar cell technology has been driven by the need to overcome the efficiency and cost problems encountered by current crystalline Si- and thin-film-based solar cells. Using first-principles methods, Ge/Si and Si/Ge core/shell and Si-Ge layered nanowires are shown to possess the required qualities for an efficient use in photovoltaic applications. We investigate the details of their band structure, effective mass, absorption property, and charge-carrier localization. The strong charge separation and improved absorption in the visible spectrum indicate a remarkable quantum efficiency that, combined with new designs, compares positively with bulk Si.


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Citation Formats
R. Pekoz, O. B. Malcıoğlu, and J.-Y. Raty, “First-principles design of efficient solar cells using two-dimensional arrays of core-shell and layered SiGe nanowires,” PHYSICAL REVIEW B, pp. 0–0, 2011, Accessed: 00, 2020. [Online]. Available: