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Assessing individual radial junction solar cells over millions on VLS-grown silicon nanowires.

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Title: Assessing individual radial junction solar cells over millions on VLS-grown silicon nanowires.
Authors: Linwei Yu1,2 Linwei.yu@polytechnique.edu, Rigutti, Lorenzo3,4, Tchernycheva, Maria3, Misra, Soumyadeep1, Foldyna, Martin1, Picardi, Gennaro1, Cabarrocas, Pere Roca i1
Source: Nanotechnology. 2013, Vol. 24 Issue 27, p1-8. 8p.
Subjects: Solar cells, Silicon nanowires, Electron beams, Plasma deposition, Substrates (Materials science)
Abstract: Silicon nanowires (SiNWs) grown on low-cost substrates provide an ideal framework for the monolithic fabrication of radial junction photovoltaics. However, the quality of junction formation over a random matrix of SiNWs, fabricated via a vapor-liquid-solid (VLS) mechanism, has never been assessed in a realistic context. To address this, we probe the current response of individual radial junction solar cells under electron-beam and optical-beam excitations. Excellent current generation from the radial junction units, compared to their planar counterparts, has been recorded, indicating a high junction quality and effective doping in the ultra-thin SiNWs with diameters thinner than 20 nm. Interestingly, we found that the formation of radial junctions by plasma deposition can be quite robust against geometrical disorder and even the crossings of neighboring cell units. These results provide a strong support to the feasibility of building high-quality radial junction solar cells over high-throughput VLS-grown SiNWs on low-cost substrates. [ABSTRACT FROM AUTHOR]
Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 90051098
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Assessing individual radial junction solar cells over millions on VLS-grown silicon nanowires.
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  Data: <searchLink fieldCode="AR" term="%22Linwei+Yu%22">Linwei Yu</searchLink><relatesTo>1,2</relatesTo><i> Linwei.yu@polytechnique.edu</i><br /><searchLink fieldCode="AR" term="%22Rigutti%2C+Lorenzo%22">Rigutti, Lorenzo</searchLink><relatesTo>3,4</relatesTo><br /><searchLink fieldCode="AR" term="%22Tchernycheva%2C+Maria%22">Tchernycheva, Maria</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Misra%2C+Soumyadeep%22">Misra, Soumyadeep</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Foldyna%2C+Martin%22">Foldyna, Martin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Picardi%2C+Gennaro%22">Picardi, Gennaro</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cabarrocas%2C+Pere+Roca+i%22">Cabarrocas, Pere Roca i</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nanotechnology%22">Nanotechnology</searchLink>. 2013, Vol. 24 Issue 27, p1-8. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Solar+cells%22">Solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22Silicon+nanowires%22">Silicon nanowires</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+beams%22">Electron beams</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+deposition%22">Plasma deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Substrates+%28Materials+science%29%22">Substrates (Materials science)</searchLink>
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  Label: Abstract
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  Data: Silicon nanowires (SiNWs) grown on low-cost substrates provide an ideal framework for the monolithic fabrication of radial junction photovoltaics. However, the quality of junction formation over a random matrix of SiNWs, fabricated via a vapor-liquid-solid (VLS) mechanism, has never been assessed in a realistic context. To address this, we probe the current response of individual radial junction solar cells under electron-beam and optical-beam excitations. Excellent current generation from the radial junction units, compared to their planar counterparts, has been recorded, indicating a high junction quality and effective doping in the ultra-thin SiNWs with diameters thinner than 20 nm. Interestingly, we found that the formation of radial junctions by plasma deposition can be quite robust against geometrical disorder and even the crossings of neighboring cell units. These results provide a strong support to the feasibility of building high-quality radial junction solar cells over high-throughput VLS-grown SiNWs on low-cost substrates. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1088/0957-4484/24/27/275401
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      – Code: eng
        Text: English
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      – SubjectFull: Solar cells
        Type: general
      – SubjectFull: Silicon nanowires
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      – SubjectFull: Electron beams
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      – SubjectFull: Plasma deposition
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              Text: 2013
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