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GreenLight News
Laser “unprinter” vaporizes toner
Jun 1, 2012 — A laser device that vaporizes photocopied ink from paper soon could be in offices worldwide. The laser “unprinter,” developed by engineers at the University of Cambridge in the UK, removes toner from scraps of paper without damaging them so that they can be reused. Dr. Julian Allwood, leader of the Low Carbon Materials Processing Group at the university, and doctoral candidate David Leal-Ayala used a variety of lasers to test toner-print removal. With the aid of the Bavarian L...
Spinach may hold key to understanding photosynthesis
Jun 1, 2012 — Photosynthesis is vital to the continued survival of life on Earth because it produces most of Earth’s supply of oxygen. For a long time, scientists have been convinced that if they could completely understand how photosynthesis works, they...
Ultrathin solar cells for stretchable applications
Jun 1, 2012 — An ultrathin flexible organic solar cell less than 2 µm thick could have implications for the design of future flexible electronic devices. Scientists from Johannes Kepler University Linz and the University of Tokyo developed the...
Full spectrum boosts solar cell power
May 1, 2012 — Solar cell efficiency, currently hovering in the 15 to 20 percent range, can theoretically be boosted to as high as 70 percent by printing specially engineered nanostructures on the cells, researchers say.
New solar cells are more efficient
Apr 1, 2012 — “By demonstrating this new strategy for beating the usual solar-cell efficiency limits, we’ve raised the target for everyone to aim at.” – Professor Neil Greenham, University of Cambridge A novel solar cell design could...
Lasers sought to map jet emissions
Mar 1, 2012 — Travelers concerned about the carbon footprint – or carbon trail, if you will – left behind by airplanes might be happy to hear about a British endeavor in which lasers could lead to greener jet engines. The project, called FLITES...
Solar concentration without mirrors
Mar 1, 2012 — Mirror-free thermophotovoltaic devices could someday make a much simpler and less expensive system to concentrate sunlight. The goal is to prevent heat from escaping the thermoelectric material by using a photonic crystal – essentially, an...
“Fool’s gold” is pretty smart for solar cells
Feb 1, 2012 — Fool’s gold may not live up to its name after all. Iron pyrite – aka iron sulfide – has been mistakenly overlooked as an efficient solar cell material for too long, according to researchers at Oregon State University in Corvallis,...
Sensor Reveals 1000 Colors Across Land, Sea, Space
Jan 1, 2012 — It can be used underground, underwater and even in space. A versatile new system, it comprises innovative optics that can be used with any spectrometer, can collect more than 1000 colors and is so stable and reliable that it can be used to detect...
“Smart windows” will adjust to the weather outside
Dec 1, 2011 — Home or office windows soon could be made to darken to shield us from a scorching summer sun, then made to switch back to transparent in winter to take advantage of light and heat available from the sun on those shorter days. A team of Korean...
Could optofluidics solve the energy challenge?
Nov 1, 2011 — Optofluidics could be poised to revolutionize energy production, according to Demetri Psaltis, dean of the engineering school at École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland. Optofluidics is the combination of...
Coming to a Printer Near You: Flexible Lightweight Solar Cells
Oct 1, 2011 — Solar cells could someday be as easy to produce as corporate memos. Just ask a team at MIT, whose chemical vapor deposition (CVD) technique allows arrays of photovoltaic (PV) cells to be printed on ordinary untreated paper – including tissue,...
New Approaches Could Make Solar a Better Business
Oct 1, 2011 — Advances in laser drilling, coatings and polygon scanner technology promise to speed up photovoltaic panel production – and drive down costs, too. The closer you get to Germany by plane, the more the country seems to glitter. Shiny solar...
Self-assembling polymers could enable ultracheap solar panels
Sep 1, 2011 — It is no surprise that many solar developers believe that polymer (plastic) cells that can cover huge areas could help bring us into a new age of renewable energy. Polymer solar cells are much cheaper to produce than conventional silicon types and...
Solar inverter sets efficiency record
Aug 1, 2011 — After the solar generator, the inverter is the next most important component in a grid-linked photovoltaic system. And a new solar inverter boasts a boosted efficiency of 99 percent, up from 96 in others. Improving the way we harvest sunlight and...
Solar Power Without Semiconductors
Jul 1, 2011 — A magneto-optical effect that has been overlooked for more than 100 years may one day be harnessed to create semiconductor-free solar cells. It sounds implausible – using sunlight to generate an electric charge without the use of...
Solar cell electrodes could turn market to gold
CONVENTRY, UK – A university spinout company wants to put the Midas touch on the organic solar cell market through the use of gold-coated electrodes. Molecular Solar, the commercializing force behind the University of Warwick’s endeavors in solar cell...
Could “floatovoltaics” solve the land space debate?
May 1, 2011 — Finding room for large arrays of solar panels is not always easy, especially in industrial or agricultural areas. But for Yossi Fisher, CEO of Solaris Synergy in Jerusalem, there is an obvious solution: leveraging untapped water surfaces to deploy...
Ultrafast laser scribes solar cells
May 1, 2011 — A new manufacturing method using an ultrafast pulsing laser could make thin-film solar cell arrays a more efficient and less expensive means of power generation. The current method of connecting solar panels into arrays that generate usable...
LEDs: The greener choice, or a toxic threat?
Apr 1, 2011 — The explosive growth of the LED market is well documented, with LED lighting widely reported as being more energy-efficient than other lighting sources as well as more environmentally friendly. But a new study carried out by teams at the University...
Smooth flakes of gold build better plasmonic devices
WÜRZBURG, Germany – Size is everything when it comes to fabricating plasmonic structures. For optical nanoantennas, for example, we’re talking about tens of nanometers in length, with a gap of less than 10 nm. At this scale, even slight defects can become a...
CZTSSe solar cell shows realistic potential for commercialization
Feb 1, 2011 — Scientists at Purdue University in West Lafayette, Ind., have developed a thin-film solar cell from Earth-abundant materials. They say that their CZTSSe solar cell, which is made from CZTS nanocrystals, could provide a cost-friendly alternative to...
Manufacturing plastic solar cells by the meter
Feb 1, 2011 — The conventional solar cell is powerful, but heavy and expensive. For applications such as tents or car roofs, a more suitable option would be flexible organic photovoltaics (OPVs) printed on plastic foil. OPVs work well in low-light conditions, but...
IR technique senses traffic pollution
Jan 1, 2011 — A rapid and nonintrusive method to analyze traffic pollution based on the open-path Fourier transform infrared (FTIR) technique has passed a road test in two Spanish towns. The technique, which can be applied to the remote sensing of many...
Jet engine technology boosts LED output
Jan 1, 2011 — General Electric Co.’s product mix runs from jet engines to lightbulbs. Now one is benefiting from the other, after scientists combined jet engine cooling technology with LED bulbs. The researchers, from GE’s Global Research and...
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April 2024
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