Si nano-VINe: Electrical Percolation in Quantum-Confined nc-Si:SiO2 Systems
| Autor: | Ilday, Serim, Ustunel, Hande, Ilday, F. Ömer, Toffoli, Daniele, Nogay, Gizem, Friedrich, David, Hübner, René, Schmidt, Bernd, Heinig, Karl-Heinz, Turan, Rasit |
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| Rok vydání: | 2013 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Nanostructures, especially of silicon, are of paramount importance for new generation solar cell applications. The key material requirements for solar cells are good electrical conductivity, confinement of excitons, and a tunable band-gap that allows for tandem arrangements to absorb a maximally large portion of the solar spectrum. However, to date, existing Si-based nanostructures have addressed these requirements individually. The difficulty is that these requirements are entangled in complex ways, so an effort to improve one can lead to a major trade-offs in the others. In this study, we report on a novel silicon nanostructure, where the key advance is that we have managed to satisfy all the abovementioned requirements simultaneously: We demonstrate that the excitons are confined, the bandgap is tunable, and the electrons can freely travel along the nc-Si network. Comment: 26 pages, 4 figures |
| Databáze: | arXiv |
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