Transformation of Ag Nanowires into Semiconducting AgFeS2 Nanowires

B Sciacca, AO Yalcin, EC Garnett

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    We report on the synthesis of semiconducting AgFeS2 nanowires, obtained from the conversion of Ag nanowires. The study of the conversion process shows that the formation of Ag2S nanowires, as an intermediate step, precedes the conversion into AgFeS2 nanowires. The chemical properties of AgFeS2 nanowires were characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy at intermediate steps of the conversion process and show that the temperature at which the reaction takes place is critical to obtaining nanowires as opposed to nanotubes. Optical measurements on nanowire ensembles confirm the semiconducting nature of AgFeS2, with a direct band gap of 0.88 eV.
    Original languageEnglish
    Pages (from-to)4340-4343
    Number of pages4
    JournalJournal of the American Chemical Society
    Volume137
    Issue number13
    Publication statusPublished - 2015

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