Researchers in South Korea have, for the first time, developed a simple technique to produce a two-dimensional nitrogen-containing crystal that has the capacity to be a potential rival to graphene and silicon as semi-conductor materials.
Graphene is a two-dimensional (2D) one-atom-thick sheet of carbon crystals that has many extraordinary properties in terms of its strength, electrical and thermal conductivity, and optical transparency. Graphene shows promise for use in nanoelectronics, hydrogen storage, batteries and sensors.
Research on graphene in recent years has raised huge interest among scientists about the potential of synthesising other 2D crystals by introducing elements other than carbon into graphene’s carbon lattice. The motivation behind this is the possibility this might provide to develop materials that can be used as an active switching element in electronics.
The atomic size and structure of nitrogen make it an excellent choice for this purpose because it can fit naturally into a strong network of carbon atoms by creating bonds (sp2) in which electrons are shared by the whole network.
Whereas there are many difficulties in the synthesis of graphene, the team of researchers at Ulsan National Institute of Science and Technology (UNIST) and Pohang University of Science and Technology in South Korea synthesized nitrogenated 2D crystals using a simple chemical reaction in liquid phase without using a template. Conventional methods for the formation of 2D crystals require the use of such a template.
The researchers verified the structure of the nitrogenated crystal by atomic-resolution scanning tunnelling microscopy imaging and confirmed its semiconducting nature by testing it with a field effect transistor. The unique geometric and electronic structure of the nitrogenated crystals make it potentially suitable for use in electronics, sensors and catalysis.
Its successful synthesis using a simple technique may open a new chapter in the cost-effective generation of other 2D materials.
“We believe that the results presented in this work provide not only compelling advance in materials science and technology, but also exciting potential for a wide range of practical applications from wet-chemistry to device applications,” says Professor Jong-Beom Baek, professor of the School of Energy and Chemical Engineering at UNIST. “Thus, the material would attract immediate attention from a broad range of disciplines, due to its potential scientific and technological impacts,” he says.
The findings of the study appeared in Nature Communications on March 6, 2015.
(Nat. Commun. 6:6486 doi: 10.1038/ncomms7486 (2015))
For further information contact:
Jong-Beom Baek, PhD
Professor/Director, School of Energy and Chemical Engineering/
Center for Dimension-Controllable Covalent Organic Framework
Ulsan National Institute of Science and Technology
100 Banyeon, Ulsan 689-798, South Korea
About the Center for Dimension-Controllable Covalent Organic Framework
The Centre was launched on 1st December 2014. It is one of the prestigious Creative Research Initiative (CRI) programs which will be supported by the National Research Foundation of Korea for next 9 years. The centre will focus on the development of a new class of two-dimensional (2D) structures. Its research objectives are the design and synthesis of low-dimensional carbon-based materials beyond graphene with potential applications in energy conversion and storage, catalysis, electronic device, gas storage and nanomedicine/nanobiotechnology.
UNIST-PR | ResearchSEA
Magnesium magnificent for plasmonic applications
23.05.2018 | Rice University
New concept for structural colors
18.05.2018 | Technische Universität Hamburg-Harburg
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
23.05.2018 | Life Sciences
23.05.2018 | Life Sciences
23.05.2018 | Physics and Astronomy