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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application


High yield exfoliation of two-dimensional chalcogenides using sodium naphthalenide

DC Field Value Language Zheng, Jian ko Zhang, Han ko Dong, Shaohua ko Liu, Yanpeng ko Nai, Chang Tai ko Shin, Hyeon Suk ko Jeong, Hu Young ko Liu, Bo ko Loh, Kian Ping ko 2014-04-10T02:26:30Z - 2014-01-20 ko 2014-01 ko
dc.identifier.citation NATURE COMMUNICATIONS, v.5, pp.2995 ko
dc.identifier.issn 2041-1723 ko
dc.identifier.uri -
dc.description.abstract Transition-metal dichalcogenides like molybdenum disulphide have attracted great interest as two-dimensional materials beyond graphene due to their unique electronic and optical properties. Solution-phase processes can be a viable method for producing printable single-layer chalcogenides. Molybdenum disulphide can be exfoliated into monolayer flakes using organolithium reduction chemistry; unfortunately, the method is hampered by low yield, submicron flake size and long lithiation time. Here we report a high-yield exfoliation process using lithium, potassium and sodium naphthalenide where an intermediate ternary LixMXn crystalline phase (X=selenium, sulphur, and so on) is produced. Using a two-step expansion and intercalation method, we produce high-quality single-layer molybdenum disulphide sheets with unprecedentedly large flake size, that is up to 400 μm2. Single-layer dichalcogenide inks prepared by this method may be directly inkjet-printed on a wide range of substrates. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.title High yield exfoliation of two-dimensional chalcogenides using sodium naphthalenide ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84891764011 ko
dc.identifier.wosid 000331081200002 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 3 * 2014-10-18 * 2014-07-12 *
dc.identifier.doi 10.1038/ncomms3995 ko
dc.identifier.url ko
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