Show simple item record

dc.contributor.authorClark, Rhiannon M
dc.contributor.authorKotsakidis, Jimmy C
dc.contributor.authorWeber, Bent
dc.contributor.authorBerean, Kyle J
dc.contributor.authorCarey, Benjamin J
dc.contributor.authorField, Matthew R
dc.contributor.authorKhan, Hareem
dc.contributor.authorOu, Jian Zhen
dc.contributor.authorAhmed, Taimur
dc.contributor.authorHarrison, Christopher J
dc.contributor.authorCole, Ivan S
dc.contributor.authorLatham, Kay
dc.contributor.authorKalantar-zadeh, Kourosh
dc.contributor.authorDaeneke, Torben
dc.description.abstractThere is ongoing interest in exploring new two-dimensional materials and exploiting their functionalities. Here, a top-down approach is used for developing a new morphology of ultrathin nanosheets from highly ordered bismuth sulfide crystals. The efficient chemical delamination method exfoliates the bulk powder into a suspension of corrugated ultrathin sheets, despite the fact that the Bi2S3 fundamental layers are made of atomically thin ribbons that are held together by van der Waals forces in two dimensions. Morphological analyses show that the produced corrugated sheets are as thin as 2.5 nm and can be as large as 20 μm across. Determined atomic ratios indicate that the exfoliation process introduces sulfur vacancies into the sheets, with a resulting stoichiometry of Bi2S2.6. It is hypothesized that the nanoribbons were cross-linked during the reduction process leading to corrugated sheet formation. The material is used for preparing field effect devices and was found to be highly p-doped, which is attributed to the substoichiometry. These devices show a near-linear response to the elevation of temperature. The devices demonstrate selective and relatively fast response to NO2 gas when tested as gas sensors. This is the first report showing the possibility of exfoliating planar morphologies of metal chalcogenide compounds such as orthorhombic Bi2S3, even if their stratified crystal structures constitute van der Waals forces within the fundamental planes.
dc.publisherAmerican Chemical Society
dc.relation.ispartofjournalChemistry of Materials
dc.subject.fieldofresearchChemical sciences
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsChemistry, Physical
dc.subject.keywordsMaterials Science, Multidisciplinary
dc.titleExfoliation of quasi-stratified Bi2S3 crystals into micron-scale ultrathin corrugated nanosheets
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationClark, RM; Kotsakidis, JC; Weber, B; Berean, KJ; Carey, BJ; Field, MR; Khan, H; Ou, JZ; Ahmed, T; Harrison, CJ; Cole, IS; Latham, K; Kalantar-zadeh, K; Daeneke, T, Exfoliation of quasi-stratified Bi2S3 crystals into micron-scale ultrathin corrugated nanosheets, Chemistry of Materials, 2016, 28 (24), pp. 8942-8950
gro.hasfulltextNo Full Text
gro.griffith.authorCole, Ivan

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record