Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence

Piljae Joo, Kiyoung Jo, Gwanghyun Ahn, Damien Voiry, Hu Young Jeong, Sunmin Ryu, Manish Chhowalla, Byeong Su Kim

Research output: Contribution to journalArticle

41 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)6456-6462
Number of pages7
JournalNano Letters
Volume14
Issue number11
DOIs
Publication statusPublished - Nov 12 2014

Fingerprint

Polyelectrolytes
Photoluminescence
Multilayers
Metals
photoluminescence
Nanosheets
Excitons
Molybdenum
Transition metals
assembly
molybdenum disulfides
molybdenum disulfide
LDS 751
spacers
assemblies
interlayers
transition metals
excitons

Keywords

  • dopant
  • exciton
  • layer-by-layer assembly
  • MoS
  • photoluminescence
  • Two-dimensional materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering
  • Medicine(all)

Cite this

Joo, P., Jo, K., Ahn, G., Voiry, D., Jeong, H. Y., Ryu, S., ... Kim, B. S. (2014). Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence. Nano Letters, 14(11), 6456-6462. https://doi.org/10.1021/nl502883a

Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence. / Joo, Piljae; Jo, Kiyoung; Ahn, Gwanghyun; Voiry, Damien; Jeong, Hu Young; Ryu, Sunmin; Chhowalla, Manish; Kim, Byeong Su.

In: Nano Letters, Vol. 14, No. 11, 12.11.2014, p. 6456-6462.

Research output: Contribution to journalArticle

Joo, P, Jo, K, Ahn, G, Voiry, D, Jeong, HY, Ryu, S, Chhowalla, M & Kim, BS 2014, 'Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence', Nano Letters, vol. 14, no. 11, pp. 6456-6462. https://doi.org/10.1021/nl502883a
Joo, Piljae ; Jo, Kiyoung ; Ahn, Gwanghyun ; Voiry, Damien ; Jeong, Hu Young ; Ryu, Sunmin ; Chhowalla, Manish ; Kim, Byeong Su. / Functional polyelectrolyte nanospaced MoS2 multilayers for enhanced photoluminescence. In: Nano Letters. 2014 ; Vol. 14, No. 11. pp. 6456-6462.
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