| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 73002 | Microporous and Mesoporous Materials | 2014 | 4 Pages |
•Nanoporous germanium layers obtained by Ge+ ion self-implant were investigated.•The fundamental optical absorption energies of nanoporous Ge were measured.•Au nanoparticles were embedded within the nanoporous Ge structure.•Au nanoparticles caused the enhancement of the surface photovoltage.•This nanoporous structure could be employed in future photovoltaic applications.
Optoelectronic properties of nanoporous Ge (np-Ge) have been investigated by Surface Photovoltage Spectroscopy. Electronic transitions in np-Ge have been compared with the ones obtained on crystalline and amorphous Ge, their dependence on ion implantation fluence and annealing treatment has been investigated. Np-Ge layers decorated with Au nanoparticles have been studied, and a significant photovoltage enhancement, probably related to light trapping effects, has been found. This result can be of major interest for future photovoltaic applications.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
