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High‐Performance Silicon Nanowire Array Photoelectrochemical Solar Cells through Surface Passivation and Modification

2011; Wiley; Volume: 50; Issue: 42 Linguagem: Inglês

10.1002/anie.201104102

1521-3773

Xin Wang, Kui‐Qing Peng, Xiaojun Pan, Xue Chen, Yang Yang, Li Li, Xiangmin Meng, Wenjun Zhang, Shuit‐Tong Lee,

Anodic Oxide Films and Nanostructures

Nanowire solar cells: Pt nanoparticle (PtNP) decorated C/Si core/shell nanowire photoelectrochemical solar cells (see picture) show high conversion efficiency of 10.86 % and excellent stability in aggressive electrolytes under 1-sun AM 1.5 G illumination. Superior device performance is achieved by improved surface passivation of the nanowires by carbon coating and enhanced interfacial charge transfer by PtNPs.