Ultrafast Transient Terahertz Conductivity of Monolayer MoS2 and WSe2 Grown by Chemical Vapor Deposition

Callum J Docherty, Patrick Parkinson, Hannah J Joyce, Ming-Hui Chen, Chaing-Hsiao Chen, Ming-Yang Lee, Lain-Jong Li, Laura M Herz, Michael B Johnston

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have measured ultrafast charge carrier dynamics in monolayers and trilayers of the transition metal dichalcogenides MoS2 and WSe2 using a combination of time-resolved photoluminescence and terahertz spectroscopy. We recorded a photoconductivity and photoluminescence response time of just 350 fs from CVD-grown monolayer MoS2, and 1 ps from trilayer MoS2 and monolayer WSe2. Our results indicate the potential of these materials as high-speed optoelectronic materials.
    Original languageEnglish
    Pages (from-to)11147-11153
    Number of pages7
    JournalA C S Nano
    Volume8
    Issue number11
    DOIs
    Publication statusPublished - 27 Oct 2014

    Keywords

    • ultrafast

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