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In addition to the Silicon Valley, California on the west coast of the USA is home to a biotechnology hub. 26% of all American biotechnology firms are located in this state, but they count for over...
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Fabrication on patterned silicon carbide produces bandgap to advance graphene electronics
By fabricating graphene structures atop nanometer-scale "steps" etched into silicon carbide, researchers have for the first time created a substantial electronic bandgap in the material suitable for r...
New research gives insight into graphene grain boundaries
Using graphene either as an alternative to, or most likely as a complementary material with silicon, offers the promise of much faster future electronics, along with several other advantages over th...
New technique builds graphene-boron sheets without substrate
Engineers at Cornell University have invented a way to pattern single atom films of graphene and boron nitride, an insulator, without the use of a silicon substrate. The technique, called patterned...
Moving LEDs from silicon to copper ups the efficiency
Chinese researchers have succeeded in transferring gallium nitride (GaN) light-emitting diodes (LEDs) grown on a layer of silicon to a [...]
Graphene films could make atomically thin circuits
Researchers have patterned single atom-thick films of graphene and an insulator, boron nitride, without the use of a silicon substrate.
Single-crystal organic charge-transfer interfaces probed using Schottky-gated heterostructures
Heterointerfaces of organic semiconductors can show high electrical conductivity, but the details of their electronic structure remain largely unexplored. Schottky-gated heterostructures have now been...
Light from silicon nanocrystal LEDs
(Helmholtz Association of German Research Centres) Silicon nanocrystals have a size of a few nanometers and possess a high luminous potential. Scientists of KIT and the University of Toronto/Canada ha...
Graphene nanopores can be controlled: Less costly ways of sequencing DNA
Engineers have used advanced techniques to make the material graphene small enough to read DNA. Shrinking the size of a graphene pore to less than one nanometer opens the possibility of graphene as a...
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Graphene-silicon schottky diodes.
We have fabricated graphene-silicon Schottky diodes by depositing mechanically exfoliated graphene on top of silicon substrates. The resulting current-voltage characteristics exhibit rectifying diode...
Carbon-silicon schottky barrier diodes.
The simple fabrication of high-performance Schottky barrier diodes between silicon and conductive carbon films (C-Films) is reported. By optimizing the interface, ideality factors as low as n = 1.22 f...
Efficiency enhancement of graphene/silicon-pillar-array solar cells by HNO(3) and PEDOT-PSS.
A single-layer graphene film was grown on copper foil by chemical vapor deposition and transferred onto a silicon-pillar-array (SPA) substrate to make a Schottky junction solar cell. The SPA substrate...
Laser Patterning of Epitaxial Graphene for Schottky Junction Photodetectors.
Large-area patterning of epitaxial graphene for Schottky junction photodetectors has been demonstrated with a simple laser irradiation method. In this method, semimetal-semiconductor Schottky junction...
We have developed a simple and scalable graphene patterning method using electron-beam or ultraviolet lithography followed by a lift-off process. This method, with the merits of: high pattern resoluti...
