Reference : First-principles design of efficient solar cells using two-dimensional arrays of core...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/108554
First-principles design of efficient solar cells using two-dimensional arrays of core-shell and layered SiGe nanowires
English
Pekoz, Rengin [> >]
Malcioglu, Osman Baris mailto [Université de Liège - ULg > Département de physique > Physique de la matière condensée >]
Raty, Jean-Yves mailto [Université de Liège - ULg > Département de physique > Physique de la matière condensée]
2011
Physical Review. B, Condensed Matter and Materials Physics
83
3
035317 (6 pp.)-035317 (6 pp.)035317 (6 pp.)
Yes (verified by ORBi)
International
1098-0121
[en] 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.
http://hdl.handle.net/2268/108554

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