Out-of-plane interface dipoles and anti-hysteresis in graphene-strontium titanate hybrid transistor

10.1038/s41699-018-0055-5

2018-04-09

The out-of-plane electric polarization at the surface of SrTiO3 (STO), an archetypal perovskite oxide, may stabilize new electronic states and/or host novel device functionality. This is particularly significant in proximity to atomically thin membranes, such...

Graphene wrinkle effects on molecular resonance states

10.1038/s41699-018-0053-7

2018-03-28

Wrinkles are a unique class of surface corrugations present over diverse length scales from Kinneyia-type wrinkles in Archean-era sedimentary fossils to nanoscopic crinkling in two-dimensional crystals. Lately, the role of wrinkles on graphene has been subjec...

All-solid-state high-energy planar hybrid micro-supercapacitors based on 2D VN nanosheets and Co(OH)2 nanoflowers

10.1038/s41699-018-0052-8

2018-03-26

Planar micro-supercapacitors are recognized as one of the most competitive on-chip power sources for integrated electronics. However, most reported symmetric micro-supercapacitors suffer from low energy density. Herein, we demonstrate the facile mask-assisted...

Dielectric properties of hexagonal boron nitride and transition metal dichalcogenides: from monolayer to bulk

10.1038/s41699-018-0050-x

2018-03-08

Hexagonal boron nitride (h-BN) and semiconducting transition metal dichalcogenides (TMDs) promise greatly improved electrostatic control in future scaled electronic devices. To quantify the prospects of these materials in devices, we calculate the out-of-plan...

Electrical devices from top-down structured platinum diselenide films

10.1038/s41699-018-0051-9

2018-02-28

Platinum diselenide (PtSe2) is an exciting new member of the two-dimensional (2D) transition metal dichalcogenide (TMD) family. It has a semimetal to semiconductor transition when approaching monolayer thickness and has already shown significant potential for...

Structural transformation of layered double hydroxides: an in situ TEM analysis

10.1038/s41699-018-0048-4

2018-02-21

A comprehensive nanoscale understanding of layered double hydroxide (LDH) thermal evolution is critical for their current and future applications as catalysts, flame retardants and oxygen evolution performers. In this report, we applied in situ transmission e...

Device physics of van der Waals heterojunction solar cells

10.1038/s41699-018-0049-3

2018-02-19

Heterostructures based on atomically thin semiconductors are considered a promising emerging technology for the realization of ultrathin and ultralight photovoltaic solar cells on flexible substrates. Much progress has been made in recent years on a technolog...

Large-grain MBE-grown GaSe on GaAs with a Mexican hat-like valence band dispersion

10.1038/s41699-017-0047-x

2018-01-25

Atomically thin GaSe has been predicted to have a non-parabolic, Mexican hat-like valence band structure due to the shift of the valence band maximum (VBM) near the Γ point which is expected to give rise to novel, unique properties such as tunable magnetism, ...

Substrate engineering of graphene reactivity: towards high-performance graphene-based catalysts

10.1038/s41699-017-0046-y

2018-01-17

Graphene-based solid-state catalysis is an emerging direction in research on graphene, which opens new opportunities in graphene applications and thus has attracted enormous interests recently. A central issue in graphene-based catalysis is the lack of an eff...

Production of monolayer-rich gold-decorated 2H–WS2 nanosheets by defect engineering

10.1038/s41699-017-0045-z

2018-01-08

Chemical functionalization of low-dimensional nanostructures has evolved as powerful tool to tailor the materials’ properties on demand. For two-dimensional transition metal dichalcogenides, functionalization strategies are mostly limited to the metallic 1T-p...