Preparing the Way for Doping Wurtzite Silicon Nanowires while Retaining the Phase

It is demonstrated that boron-doped nanowires have predominantly long-term stable wurtzite phase while the majority of phosphorus-doped ones present diamond phase. A simplified model based on the different solubility of boron and phosphorus in gold is proposed to explain their diverse effectiveness...

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Bibliographic Details
Published in:Nano letters 2013-12, Vol.13 (12), p.5900-5906
Main Authors: Fabbri, Filippo, Rotunno, Enzo, Lazzarini, Laura, Cavalcoli, Daniela, Castaldini, Antonio, Fukata, Naoki, Sato, Keisuke, Salviati, Giancarlo, Cavallini, Anna
Format: Article
Language:English
Subjects:
Applied sciences
Boron - chemistry
Cross-disciplinary physics: materials science
rheology
Devices
Diamonds
Emission
Energy
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
Gold - chemistry
Humans
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanowires
Nanowires - chemistry
Natural energy
Phosphorus - chemistry
Photovoltaic conversion
Physics
Quantum wires
Silicon
Silicon - chemistry
Solar cells. Photoelectrochemical cells
Solar Energy
Solubility
Specific materials
Wurtzite
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Summary:It is demonstrated that boron-doped nanowires have predominantly long-term stable wurtzite phase while the majority of phosphorus-doped ones present diamond phase. A simplified model based on the different solubility of boron and phosphorus in gold is proposed to explain their diverse effectiveness in retaining the wurtzite phase. The wurtzite nanowires present a direct transition at the Γ point at approximately 1.5 eV while the diamond ones have a predominant emission around 1.1 eV. The aforementioned results are intriguing for innovative solar cell devices.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl4028445