GaAsP Nanowires Grown by Aerotaxy

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Abstract

We have grown GaAsP nanowires with high optical and structural quality by Aerotaxy, a new continuous gas phase mass production process to grow III-V semiconductor based nanowires. By varying the PH3/AsH3 ratio and growth temperature, size selected GaAs1-xPx nanowires (80 nm diameter) with pure zinc-blende structure and with direct band gap energies ranging from 1.42 to 1.90 eV (at 300 K), (i.e., 0 ≤ x ≤ 0.43) were grown, which is the energy range needed for creating tandem III-V solar cells on silicon. The phosphorus content in the NWs is shown to be controlled by both growth temperature and input gas phase ratio. The distribution of P in the wires is uniform over the length of the wires and among the wires. This proves the feasibility of growing GaAsP nanowires by Aerotaxy and results indicate that it is a generic process that can be applied to the growth of other III-V semiconductor based ternary nanowires.

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Subject classification (UKÄ) – MANDATORY

  • Nano Technology

Keywords

  • Aerotaxy, GaAsP nanowires, gas phase, zincblende
Original languageEnglish
Pages (from-to)5701-5707
Number of pages7
JournalNano Letters
Volume16
Issue number9
Publication statusPublished - 2016 Sep 14
Publication categoryResearch
Peer-reviewedYes

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