News tagged with quantum dots
Scientists hone in on size and environmental influence of the quantum dots used in hybrid solar cells
(Phys.org) -- Sometimes to answer big questions, you need to start small-very small. Scientists from Pacific Northwest National Laboratory's Chemical Imaging Initiative did just that when they analyzed cadmium ...
Nanotechnology / Bio & Medicine
May 31, 2012 |
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Nanomedicine: Quantum dots appear safe in pioneering study on primates
A pioneering study to gauge the toxicity of quantum dots in primates has found the tiny crystals to be safe over a one-year period, a hopeful outcome for doctors and scientists seeking new ways to battle diseases ...
Nanotechnology / Bio & Medicine
May 20, 2012 |
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'Metamaterials,' quantum dots show promise for new technologies
(Phys.org) -- Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including ...
May 24, 2012 |
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Research group creates highly sensitive photodetector from graphene and quantum dots
(Phys.org) -- Researchers in Spain have succeeded in building a photodetector that is a billion times more sensitive than other such detectors based on graphene and could herald the use of graphene based light ...
May 15, 2012 |
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Efficient and tunable interface for quantum networks
(Phys.org) -- Quantum computers may someday revolutionize the information world. But in order for quantum computers at distant locations to communicate with one another, they have to be linked together in ...
May 23, 2012 |
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Quantum dot LEDs get brighter, more efficient
(Phys.org) -- While quantum dot-based light-emitting diodes (QLEDs) are not made of organic materials, they share many of the same advantages as organic LEDs (OLEDs). For instance, both QLEDs and OLEDs outshine ...
Nanotechnology / Nanomaterials
Apr 20, 2012 |
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Quantum dots brighten the future of lighting
(Phys.org) -- With the age of the incandescent light bulb fading rapidly, the holy grail of the lighting industry is to develop a highly efficient form of solid-state lighting that produces high quality white ...
Nanotechnology / Nanomaterials
May 08, 2012 |
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Quantum computing: The light at the end of the tunnel may be a single photon
Quantum physics promises faster and more powerful computers, but quantum versions of basic logic functions are still needed to bring this technology to fruition. Researchers from the University of Cambridge and Toshiba Research ...
May 18, 2012 |
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Quantum dots with built-in charge boost solar cell efficiency by 50%
(PhysOrg.com) -- For the past few years, researchers have been using quantum dots to increase the light absorption and overall efficiency of solar cells. Now, researchers have taken a step further, demonstrating ...
May 13, 2011 |
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Could silicon be ideal in quantum computing?
(PhysOrg.com) -- "Quantum computing could provide a way to significantly speed up the way we process certain algorithms," Malcolm Carroll tells PhysOrg.com. "The primary issue, though, is that you need a well controlled two-le ...
Sep 16, 2011 |
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Diamond used to produce graphene quantum dots and nano-ribbons of controlled structure
Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics.
May 17, 2012 |
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Researchers prepare cheap quantum dot solar paint
(PhysOrg.com) -- It typically takes a day or two to prepare quantum dot solar cells in the conventional multifilm architecture. Now a team of researchers is reducing the preparation time of quantum dot solar ...
Dec 16, 2011 |
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Tiny tech, big results: Quantum dot solar cells increase solar conversion efficiency
The race to achieve ever-higher photovoltaic conversion ratios is, so to speak, a hot area of research. One line of research has focused on quantum dots – semiconductor nanocrystals under 2-10 nanome ...
Nanotechnology / Nanomaterials
Aug 02, 2011 |
4.8 / 5 (12) |
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Vertical cavity quantum switch could lead us away from electronics-based computing
(PhysOrg.com) -- Right now, many researchers around the world are working on ways to move away from electronics-dominated computing systems. There are a number of ideas about how this can be accomplished. "We are trying to ...
Jun 30, 2011 |
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Graphene quantum dots could lead to low-cost solar cells and OLEDs
(PhysOrg.com) -- Fabricating photovoltaic devices – those that convert sunlight into electricity – out of organic materials has several advantages over using non-organic materials, such as flexibility ...
Nanotechnology / Nanomaterials
Jul 05, 2011 |
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Quantum dot
A quantum dot is a semiconductor whose excitons are confined in all three spatial dimensions. As a result, they have properties that are between those of bulk semiconductors and those of discrete molecules. They were discovered by Louis E. Brus, who was then at Bell Labs. The term "Quantum Dot" was coined by Mark Reed.
Researchers have studied quantum dots in transistors, solar cells, LEDs, and diode lasers. They have also investigated quantum dots as agents for medical imaging and hope to use them as qubits.
For more information about Quantum dot, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
