InP nanowire p-type doping via Zinc indiffusion

Tuomas Haggren, Gaute Otnes, Renato Mourão, Vilgaile Dagyte, Olof Hultin, Fredrik Lindelöw, Magnus Borgström, Lars Samuelson*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    We report an alternative pathway for p-type InP nanowire (NW) doping by diffusion of Zn species from the gas phase. The diffusion of Zn was performed in a MOVPE reactor at 350–500 °C for 5–20 min with either H2 environment or additional phosphorus in the atmosphere. In addition, Zn3P2 shells were studied as protective caps during post-diffusion annealing. This post-diffusion annealing was performed to outdiffuse and activate Zn in interstitial locations. The characterization methods included photoluminescence and single NW conductivity and carrier concentration measurements. The acquired carrier concentrations were in the order of >1017 cm−3 for NWs without post-annealing, and up to 1018 cm−3 for NWs annealed with the Zn3P2 shells. The diffused Zn caused redshift to the photoluminescence signal, and the degree of redshift depended on the diffusion process.

    Original languageEnglish
    Pages (from-to)18-26
    Number of pages9
    JournalJournal of Crystal Growth
    Volume451
    DOIs
    Publication statusPublished - 1 Oct 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • A1. Annealing
    • A1. Diffusion
    • A1. Doping
    • A3. Metalorganic vapor phase epitaxy
    • B2. Semiconducting III–V materials
    • B3. Field effect transistors

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