2D FLATLANDS BEYOND GRAPHENE

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2D materials

Published May 2015 | 13 pages | £50 (PDF download)

Graphene has brought to the world’s attention the exceptional properties of two-dimensional (2D) nanosheet materials. Due to its exceptional transport, mechanical and thermal properties, graphene has been at the forefront of nanomaterials research over the past few years. However, graphene has a major problem for novel two-dimensional (2D) semiconductor applications as it lacks an energy gap between its conduction and valence bands.

Recently, researchers have looked beyond graphene to other layered 2D materials, such as molybdenum disulfide (MoS2), hexagonal boron nitride (h-BN) and phosphorene.  These materials exhibit the intrinsic properties of graphene but crucially also possess a semiconductor band gap.

TABLE OF CONTENTS

1 INTRODUCTION 

2 PHOSPHORENE

  • Properties
  • Applications
  • Recent research news

3 MOLYBDENUM DISULFIDE

  • Properties
  • Applications
  • Recent research news

4 HEXAGONAL BORON NITRIDE

  • Properties
  • Applications
  • Recent research news

5 GERMANENE

  • Properties
  • Applications
  • Recent research news

6 GRAPHANE

  • Properties
  • Applications
  • Recent research news

7 GRAPHDIYNE

  • Properties
  • Applications

8 STANENE/TINENE

  • Properties
  • Applications

9 TUNGSTEN DISELENIDE

  • Properties
  • Applications

10 RHENIUM DISULFIDE

  • Properties
  • Applications

12 PROSPECTS FOR 2D MATERIALS BEYOND GRAPHENE

TABLES & FIGURES

Figure 1: Phosphorene structure.

Table 1: Comparative analysis of grapheme and other 2D materials.

Figure 2: SIlicene structure.

Figure 3: Structure of 2D molybdenum disulfide.

Figure 4: AFM image of molybdenum disulfide thin-film transistor.

Figure 5: Schematic of the molybdenum disulfide (MoS2) thin-film sensor.

Figure 6: Molybdenum disulfide sheets to improve rechargeable lithium-ion batteries.

Figure 7: Schematic cross-section view of atomic layer of molybdenum disulfide contacted by graphene, and encapsulated between layers of insulating hexagonal boron nitride.

Figure 8: Structure of hexagonal boron nitride.

Figure 9: Periodic arrays of cone-shaped hexagonal boron nitride (hBN) nanoantennas.

Figure 10: Schematic of germanane.

Figure 11: Graphdiyne structure.

Figure 12: Schematic of Graphane crystal.

Figure 13: Crystal structure for stanene (2D-Sn).

Table 2: Comparison of properties of WSe2 and MoS2.

Figure 14: Schematic of tungsten diselenide.

Figure 15: Schematic of a monolayer of rhenium disulphide.

2D FLATLANDS BEYOND GRAPHENE
2D FLATLANDS BEYOND GRAPHENE
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