4.8 Article

Tuning the Bandgap of Exfoliated InSe Nanosheets by Quantum Confinement

Journal

ADVANCED MATERIALS
Volume 25, Issue 40, Pages 5714-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201302616

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Funding

  1. Engineering and Physical Sciences Research Council (EPSRC)
  2. University of Nottingham
  3. Ukrainian Academy of Sciences
  4. Engineering and Physical Sciences Research Council [1230142] Funding Source: researchfish

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Strong quantization effects and tuneable near-infrared photoluminescence emission are reported in mechanically exfoliated crystals of gamma-rhombohedral semiconducting InSe. The optical properties of InSe nanosheets differ qualitatively from those reported recently for exfoliated transition metal dichalcogenides and indicate a crossover from a direct to an indirect band gap semiconductor when the InSe flake thickness is reduced to a few nanometers.

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