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exciton News
Study of Perovskites Uncovers New State of Matter
MONTREAL, June 1, 2021 — McGill University researchers set out to uncover the secrets of perovskite’s ability to act as a semiconductor, even with structural defects. In doing so, they have discovered what amounts to a new state of matter. Perovskites have garnered...
Continuous, Stable Lasing Achieved with Perovskite Laser
FUKUOKA, Japan, Sept. 8, 2020 — A team of researchers from Kyushu University in Japan and Changchun Institute of Applied Chemistry in China has demonstrated stable, continuous lasing at room temperature for over an hour using low-cost perovskites. Perovskites have been an...
Groups demonstrate electrically driven polariton lasers
WÜRZBURG, Germany, and ANN ARBOR, Mich. – An electrically driven polariton laser – one fueled by electricity instead of light – was demonstrated recently by two separate groups. Optically driven polariton (a mix of photons and excitons) lasers have been demonstrated before, but...
Polariton Laser Is Electrically Injected
STANFORD, Calif., and WÜRZBURG, Germany, May 16, 2013 — A paradigm-shifting “polariton” laser fueled by electricity rather than by light has been demonstrated by researchers at the University of Michigan.
Photon funnel makes the most of sun’s rays
Feb 1, 2013 — A solar “funnel” exploits materials under elastic strain and could provide a new way of harnessing photons for electricity by capturing a wider spectrum of solar energy. “We’re trying to use elastic strains to produce...
QDs Are Entering the Mainstream
Feb 1, 2013 — Since their discovery in the 1980s, quantum dots have been quietly gaining momentum, making slow but steady headway in applications from displays and lighting to photovoltaics and health care. Unique and versatile, quantum dots (QDs) are no longer...
Photon Funnel Captures Wider Spectrum of Sun’s Rays
CAMBRIDGE, Mass., Nov. 30, 2012 — A solar “funnel” that exploits materials under elastic strain could capture a wider spectrum of solar energy, providing a new way of harnessing photons for electricity.
Laser mixing generates multifrequency light
SANTA BARBARA, Calif. – A groundbreaking laser mixing technique can manipulate electron-hole collisions to create many frequencies of light simultaneously. This mechanism for ultrafast light modulation has potential applications in high-speed optical communications. ...
Laser Mixing Generates Multifrequency Light
SANTA BARBARA, Calif., March 29, 2012 — A groundbreaking laser mixing technique can manipulate electron-hole collisions to create many frequencies of light simultaneously. This mechanism for ultrafast light modulation has potential applications in high-speed optical communications.
Quantum dot ink will make lasers printable
CLAYTON SOUTH and MELBOURNE, Australia, & PADUA, Italy – Printing techniques that already have been incorporated into solar cell manufacturing could prove useful for the production of lasers and other emitting optoelectronic devices, according to researchers from Australia and Italy. Quantum dots are...
Spray-On Solar Cells Pursued
WARWICK, UK, March 18, 2009 – Creating solar cells you can wear, fold, and bend -- and even spray onto surfaces -- is the goal of a four-year research program set to begin next month under a consortium of eight UK universities.
QD 'Doughnuts' Control Light
COVENTRY, England, March 11, 2009 -- Doughnut-shaped byproducts of quantum dots have been used to slow and even freeze light. While others have used varying exotic states of matter to dramatically slow the progress of light, this is the first time a technique has been devised to...
First Excitonic ICs Built
SAN DIEGO, June 24, 2008 -- Physicists have assembled the first integrated circuits (ICs) that use excitons -- particles that emit a flash of light as they decay -- instead of electrons to ferry signals. These exciton-based transistors could be used in a new kind of computer...
Flip-Spin Flop Yields Tool
EUGENE, Ore., June 2, 2008 -- An attempt to flip the spin of electrons using ultrafast laser bursts may have failed, but in the process researchers found a way to manipulate and control electron spin -- knowledge that may prove useful in a variety of new materials and...
(14 results found)
April 2024
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