Radial tunnel diodes based on InP/InGaAs core-shell nanowires

Tizno, Ofogh and Ganjipour, Bahram and Heurlin, Magnus and Thelander, Claes and Borgström, Magnus T and Samuelson, Lars (2017) Radial tunnel diodes based on InP/InGaAs core-shell nanowires. Applied Physics Letters, 110 (11): 113501. ISSN 0003-6951

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We report on the fabrication and characterization of radial tunnel diodes based on InP(n+)/InGaAs(p+) core-shell nanowires, where the effect of Zn-dopant precursor flow on the electrical properties of the devices is evaluated. Selective and local etching of the InGaAs shell is employed to access the nanowire core in the contact process. Devices with an n+-p doping profile show normal diode rectification, whereas n+-p+ junctions exhibit typical tunnel diode characteristics with peak-to-valley current ratios up to 14 at room temperature and 100 at 4.2 K. A maximum peak current density of 28 A/cm2 and a reverse current density of 7.3 kA/cm2 at VSD = −0.5 V are extracted at room temperature after normalization with the effective junction area.

Item Type:
Journal Article
Journal or Publication Title:
Applied Physics Letters
Additional Information:
Copyright 2017 American Institute of Physics. The following article appeared in Applied Physics Letters, 110 (11), 2017 and may be found at http://dx.doi.org/10.1063/1.4978271 This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Uncontrolled Keywords:
?? shell nanowireisaki diodetunnel diodesradial tunnel diodeiii-v semiconductorsphysics and astronomy(all)physics and astronomy (miscellaneous) ??
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Deposited On:
03 Apr 2017 12:16
Last Modified:
22 Mar 2024 00:42