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Monolithically Integrated Metal/Semiconductor Tunnel Junction Nanowire Light-Emitting Diodes.

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Title: Monolithically Integrated Metal/Semiconductor Tunnel Junction Nanowire Light-Emitting Diodes.
Authors: Sadaf, S. M.1, Ra, Y. H.1, Szkopek, T.1, Mi, Z.1 zetian.mi@mcgill.ca
Source: Nano Letters. Feb2016, Vol. 16 Issue 2, p1076-1080. 5p.
Subjects: Monolithic reactors, Semiconductors, Tunnel junctions (Materials science), Light emitting diodes, Molecular beam epitaxy
Abstract: We have demonstrated for the first time an n++-GaN/Al/p++-GaN backward diode, wherein an epitaxial Al layer serves as the tunnel junction. The resulting p-contact free InGaN/GaN nanowire light-emitting diodes (LEDs) exhibited a low turn-on voltage (~2.9 V), reduced resistance, and enhanced power, compared to nanowire LEDs without the use of Al tunnel junction or with the incorporation of an n++-GaN/p++-GaN tunnel junction. This unique Al tunnel junction overcomes some of the critical issues related to conventional GaN-based tunnel junction designs, including stress relaxation, wide depletion region, and light absorption, and holds tremendous promise for realizing low-resistivity, high-brightness III-nitride nanowire LEDs in the visible and deep ultraviolet spectral range. Moreover, the demonstration of monolithic integration of metal and semiconductor nanowire heterojunctions provides a seamless platform for realizing a broad range of multifunctional nanoscale electronic and photonic devices. [ABSTRACT FROM AUTHOR]
Copyright of Nano Letters is the property of American Chemical Society 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.)
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  Data: Monolithically Integrated Metal/Semiconductor Tunnel Junction Nanowire Light-Emitting Diodes.
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  Data: <searchLink fieldCode="JN" term="%22Nano+Letters%22">Nano Letters</searchLink>. Feb2016, Vol. 16 Issue 2, p1076-1080. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Monolithic+reactors%22">Monolithic reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductors%22">Semiconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Tunnel+junctions+%28Materials+science%29%22">Tunnel junctions (Materials science)</searchLink><br /><searchLink fieldCode="DE" term="%22Light+emitting+diodes%22">Light emitting diodes</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+beam+epitaxy%22">Molecular beam epitaxy</searchLink>
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  Label: Abstract
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  Data: We have demonstrated for the first time an n++-GaN/Al/p++-GaN backward diode, wherein an epitaxial Al layer serves as the tunnel junction. The resulting p-contact free InGaN/GaN nanowire light-emitting diodes (LEDs) exhibited a low turn-on voltage (~2.9 V), reduced resistance, and enhanced power, compared to nanowire LEDs without the use of Al tunnel junction or with the incorporation of an n++-GaN/p++-GaN tunnel junction. This unique Al tunnel junction overcomes some of the critical issues related to conventional GaN-based tunnel junction designs, including stress relaxation, wide depletion region, and light absorption, and holds tremendous promise for realizing low-resistivity, high-brightness III-nitride nanowire LEDs in the visible and deep ultraviolet spectral range. Moreover, the demonstration of monolithic integration of metal and semiconductor nanowire heterojunctions provides a seamless platform for realizing a broad range of multifunctional nanoscale electronic and photonic devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Nano Letters is the property of American Chemical Society 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: 10.1021/acs.nanolett.5b04215
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        Text: English
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        Type: general
      – SubjectFull: Semiconductors
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      – SubjectFull: Tunnel junctions (Materials science)
        Type: general
      – SubjectFull: Light emitting diodes
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      – SubjectFull: Molecular beam epitaxy
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              Text: Feb2016
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