Please use this identifier to cite or link to this item: https://doi.org/10.1021/nn4046002
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dc.titleNonblinking, intense two-dimensional light emitter: Monolayer WS 2 Triangles
dc.contributor.authorPeimyoo, N.
dc.contributor.authorShang, J.
dc.contributor.authorCong, C.
dc.contributor.authorShen, X.
dc.contributor.authorWu, X.
dc.contributor.authorYeow, E.K.L.
dc.contributor.authorYu, T.
dc.date.accessioned2014-10-16T09:34:00Z
dc.date.available2014-10-16T09:34:00Z
dc.date.issued2013-12-23
dc.identifier.citationPeimyoo, N., Shang, J., Cong, C., Shen, X., Wu, X., Yeow, E.K.L., Yu, T. (2013-12-23). Nonblinking, intense two-dimensional light emitter: Monolayer WS 2 Triangles. ACS Nano 7 (12) : 10985-10994. ScholarBank@NUS Repository. https://doi.org/10.1021/nn4046002
dc.identifier.issn19360851
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/97331
dc.description.abstractMonolayer WS2 (1L-WS2), with a direct band gap, provides an ideal platform to investigate unique properties of two-dimensional semiconductors. In this work, light emission of a 1L-WS2 triangle has been studied by using steady-state, time-resolved, and temperature-dependent photoluminescence (PL) spectroscopy. Two groups of 1L-WS2 triangles have been grown by chemical vapor deposition, which exhibit nonuniform and uniform PL, respectively. Observed nonuniform PL features, i.e., quenching and blue-shift in certain areas, are caused by structural imperfection and n-doping induced by charged defects. Uniform PL is found to be intrinsic, intense, and nonblinking, which are attributed to high crystalline quality. The binding energy of the A-exciton is extracted experimentally, which gives direct evidence for the large excitonic effect in 1L-WS2. These superior photon emission features make 1L-WS2 an appealing material for optoelectronic applications such as novel light-emitting and biosensing devices. © 2013 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/nn4046002
dc.sourceScopus
dc.subjectCVD
dc.subjectmicrospectroscopy
dc.subjectphotoluminescence
dc.subjecttemperature dependence
dc.subjectWS2
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1021/nn4046002
dc.description.sourcetitleACS Nano
dc.description.volume7
dc.description.issue12
dc.description.page10985-10994
dc.identifier.isiut000329137100059
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