News tagged with band gap
Related topics: graphene , solar cells , electronic devices , physical review letters
First germanium laser brings us closer to 'optical computers'
(PhysOrg.com) -- MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of light useful for optical communication. It’s also the first germanium laser to operate ...
Feb 04, 2010 |
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Can graphene nanoribbons replace silicon?
(PhysOrg.com) -- "Graphene has been the subject of intense focus and research for a few years now," Philip Kim tells PhysOrg.com. "There are researchers that feel that it is possible that graphene could replac ...
Feb 18, 2010 |
4.2 / 5 (29) |
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Solving the solar cell power conversion dilemma
(PhysOrg.com) -- "There is a lot of interest in creating more efficient solar cells that are also simpler than many of the designs common now," Wladek Walukiewicz tells PhysOrg.com. "We think that, throug ...
Jan 24, 2011 |
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Carbon Based Chips May One Day Replace Silicon Transistors
(PhysOrg.com) -- IBM researchers are hopeful that, over the next decade, silicon-based transistors will be replaced by carbon-based transistors. IBM has already laid out the ground work for carbon-based transistors.
Nanotechnology / Nanomaterials
Feb 03, 2010 |
4.7 / 5 (22) |
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New graphene 'nanomesh' could change the future of electronics
(PhysOrg.com) -- Graphene, a one-atom-thick layer of a carbon lattice with a honeycomb structure, has great potential for use in radios, computers, phones and other electronic devices. But applications have been stymied because ...
Nanotechnology / Nanomaterials
Feb 26, 2010 |
4.8 / 5 (20) |
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Researchers predict material 'denser than diamond'
(PhysOrg.com) -- Stony Brook University graduate student Qiang Zhu, together with Professor of Geosciences and Physics, Artem R. Oganov, postdoc Andriy O. Lyakhov and their colleagues from the University de ...
Jun 08, 2011 |
4.7 / 5 (20) |
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Graphene 2.0: A new approach to making a unique material
Since its discovery, graphene -- an unusual and versatile substance composed of a single-layer crystal lattice of carbon atoms—has caused much excitement in the scientific community. Now, Nongjian(NJ) Tao, ...
Nanotechnology / Nanomaterials
Jul 01, 2010 |
5 / 5 (16) |
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New PV cell generates electricity from IR and UV light
(PhysOrg.com) -- A prototype of a new type of photovoltaic (PV) cell that generates electricity from visible, infrared and ultraviolet light has been demonstrated by a group of Japanese scientists. It could ...
Mar 24, 2010 |
4.8 / 5 (16) |
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Lasers could produce much sought-after band gaps in graphene
(PhysOrg.com) -- One of the most often-cited features of graphene – the two-dimensional crystal lattice made of carbon – is its unique electronic properties. Many of these electronic properties make ...
Jun 20, 2011 |
4.9 / 5 (15) |
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Graphene may gain an 'on-off switch,' adding semiconductor to long list of material's achievements
A team of researchers has proposed a way to turn the material graphene into a semiconductor, enabling it to control the flow of electrons with a laser "on-off switch".
Nanotechnology / Nanomaterials
Jun 17, 2011 |
5 / 5 (14) |
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Graphane yields new potential: Physicists dig theoretical wells to mine quantum dots
Graphane is the material of choice for physicists on the cutting edge of materials science, and Rice University researchers are right there with the pack - and perhaps a little ahead.
May 25, 2010 |
4.9 / 5 (14) |
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Nanoribbons for graphene transistors
In the recent issue of Nature, European scientists from Empa and the Max Planck Institute for Polymer Research report how they have managed for the first time to grow graphene ribbons that are just a few ...
Nanotechnology / Nanomaterials
Jul 21, 2010 |
4.8 / 5 (14) |
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Using CNTs as infrared sensors
(PhysOrg.com) -- Semiconductors provide the bases for many different avenues of device research. Indeed, many of the technological devices that are commonplace in our society are reliant on semiconductors. However, as we ...
Jan 04, 2010 |
4.4 / 5 (15) |
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Magnets trump metallics: Magnetic fields can block conductivity of carbon nanotubes
Metallic carbon nanotubes show great promise for applications from microelectronics to power lines because of their ballistic transmission of electrons. But who knew magnets could stop those electrons in their ...
Jul 08, 2010 |
4.6 / 5 (14) |
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Water could hold answer to graphene nanoelectronics
Researchers at Rensselaer Polytechnic Institute developed a new method for using water to tune the band gap of the nanomaterial graphene, opening the door to new graphene-based transistors and nanoelectronics.
Nanotechnology / Nanomaterials
Oct 26, 2010 |
4.7 / 5 (13) |
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