Comment on 'Unconventional gap state of trapped exciton in lead sulfide quantum dots'

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    Abstract

    In a recent paper (Lewis et al 2010 Nanotechnology 21 45502) proposed a previously unidentified gap state within lead sulfide nanocrystals (PbS-NCs) based on analysis of their temperature dependent optical properties. In the following we argue that due to oversights in the analysis of the data presented, inconsistencies arise which question their exclusion of 'dark' excitonic states as the origin of the observed effects.

    Original languageEnglish
    Article number238001
    JournalNanotechnology
    Volume22
    Issue number23
    DOIs
    Publication statusPublished - 10 Jun 2011

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