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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

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Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence

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Title
Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence
Author
Joo, PiljaeJo, KiyoungAhn, GwanghyunVoiry, DamienJeong, Hu YoungRyu, SunminChhowalla, ManishKim, Byeong-Su
Issue Date
2014-11
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.14, no.11, pp.6456 - 6462
Abstract
Molybdenum disulfide (MoS2) multilayers with functional polyelectrolyte nanospacing layers are presented. Taking advantage of the facile method of layer-by-layer (LbL) assembly, individual chemically exfoliated MoS2 layers are not only effectively isolated from interlayer coupling but also doped by functional polymeric layers. It is clearly demonstrated that MoS2 nanosheets separated by polymeric trilayers exhibit a much larger increase in photoluminescence (PL) as the number of layers is increased. The enhanced PL has been correlated to the ratio of excitons to trions with the type of polymeric spacers. Because uniform heterogeneous interfaces can be formed between various transition metal dichalcogenides and other soft materials, LbL assembly offers possibilities for further development in the solution-processable assemblies of two-dimensional materials.
URI
https://scholarworks.unist.ac.kr/handle/201301/9541
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84910107524
DOI
10.1021/nl502883a
ISSN
1530-6984
Appears in Collections:
PHY_Journal Papers
SE_Journal Papers
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