15 Result(s)
-
Article
Open AccessStructure-controllable growth of nitrogenated graphene quantum dots via solvent catalysis for selective C-N bond activation
Photophysical and photochemical properties of graphene quantum dots (GQDs) strongly depend on their morphological and chemical features. However, systematic and uniform manipulation of the chemical structures ...
-
Article
Open AccessSilicon germanium photo-blocking layers for a-IGZO based industrial display
Amorphous indium- gallium-zinc oxide (a-IGZO) has been intensively studied for the application to active matrix flat-panel display because of its superior electrical and optical properties. However, the charac...
-
Article
Open AccessExtremely stable graphene electrodes doped with macromolecular acid
Although conventional p-type do** using small molecules on graphene decreases its sheet resistance (Rsh), it increases after exposure to ambient conditions, and this problem has been considered as the biggest i...
-
Article
Open AccessHydrogenated monolayer graphene with reversible and tunable wide band gap and its field-effect transistor
Graphene is currently at the forefront of cutting-edge science and technology due to exceptional electronic, optical, mechanical, and thermal properties. However, the absence of a sizeable band gap in graphene...
-
Article
Open AccessExfoliation and Raman Spectroscopic Fingerprint of Few-Layer NiPS3 Van der Waals Crystals
The range of mechanically cleavable Van der Waals crystals covers materials with diverse physical and chemical properties. However, very few of these materials exhibit magnetism or magnetic order, and thus the...
-
Article
Open AccessSurface-Engineered Graphene Quantum Dots Incorporated into Polymer Layers for High Performance Organic Photovoltaics
Graphene quantum dots (GQDs), a newly emerging 0-dimensional graphene based material, have been widely exploited in optoelectronic devices due to their tunable optical and electronic properties depending on th...
-
Article
Open AccessHigh-performance ultraviolet photodetectors based on solution-grown ZnS nanobelts sandwiched between graphene layers
Ultraviolet (UV) light photodetectors constructed from solely inorganic semiconductors still remain unsatisfactory because of their low electrical performances. To overcome this limitation, the hybridization i...
-
Article
Open AccessOrigin of White Electroluminescence in Graphene Quantum Dots Embedded Host/Guest Polymer Light Emitting Diodes
Polymer light emitting diodes (PLEDs) using quantum dots (QDs) as emissive materials have received much attention as promising components for next-generation displays. Despite their outstanding properties, tox...
-
Article
Open AccessActive control of all-fibre graphene devices with electrical gating
Active manipulation of light in optical fibres has been extensively studied with great interest because of its compatibility with diverse fibre-optic systems. While graphene exhibits a strong electro-optic eff...
-
Article
Growth dynamics and gas transport mechanism of nanobubbles in graphene liquid cells
Formation, evolution and vanishing of bubbles are common phenomena in nature, which can be easily observed in boiling or falling water, carbonated drinks, gas-forming electrochemical reactions and so on. Howev...
-
Article
Open AccessUnconventional Transport through Graphene on SrTiO3: A Plausible Effect of SrTiO3 Phase-Transitions
High-k dielectric oxides are supposedly ideal gate-materials for ultra-high do** in graphene and other 2D-crystals. Here, we report a temperature-dependent electronic transport study on chemical vapor deposi...
-
Article
Length-dependent thermal conductivity in suspended single-layer graphene
Graphene exhibits extraordinary electronic and mechanical properties, and extremely high thermal conductivity. Being a very stable atomically thick membrane that can be suspended between two leads, graphene pr...
-
Article
Open AccessMultiple Virtual Tunneling of Dirac Fermions in Granular Graphene
Graphene charge carriers behave as massless Dirac fermions, opening the exciting possibility to observe long-range virtual tunneling of electrons in a solid. In granular metals, electron hops arising from seri...
-
Article
Near-field focusing and magnification through self-assembled nanoscale spherical lenses
The performance of a light microscope is intrinsically constrained by the Abbe diffraction limit. No matter how close to optical perfection it is, an imaging system cannot resolve two objects that are beyond t...
-
Article
Large-scale pattern growth of graphene films for stretchable transparent electrodes
High-performance, transparent and stretchable electrodes are in high demand for the development of flexible electronic and optoelectronic applications. Graphene, with excellent optical, electrical and mechanic...
