GaN nanocolumns are reproducibly grown by Plasma-assisted molecular beam epitaxy on Si(111). The nanocolumn density and diameter, 20-150 nm, are controlled by means of the III/V ratio. The nanocolumns grow parallel to the [111] direction of the Si substrate. The columns have been transferred to a Si(100) substrate covered with a layer of 300nm SiO2. Single nanowire devices have been fabricated using finger shaped electrical contacts (Ti/Au) obtained by e-beam patterning technique. The electrical transport properties of the resulting metal-semiconductor-metal nanostructures are analyzed by means of current-voltage measurements in dark and under UV-illumination.
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Ritsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, JapanRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan
Wang, K.
Araki, T.
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Ritsumeikan Univ, Dept Photon, Kusatsu, Shiga 5258577, JapanRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan
Araki, T.
Yamaguchi, T.
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Kogakuin Univ, Dept Informat & Commun Engn, Hachioji, Tokyo 1920015, JapanRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan
Yamaguchi, T.
Chen, Y. T.
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Ritsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, JapanRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan
Chen, Y. T.
Yoon, E.
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Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151744, South KoreaRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan
Yoon, E.
Nanishi, Y.
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Ritsumeikan Univ, Dept Photon, Kusatsu, Shiga 5258577, Japan
Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151744, South KoreaRitsumeikan Univ, Res Org Sci & Engn, Kusatsu, Shiga 5258577, Japan