Tuesday, October 5, 2010

MIT researchers imitation solar cell on paper

CAMBRIDGE, Mass.--Scientists at the Massachusetts Institute of Technology have successfully coated paper with a solar cell, square of a apartment of investigate projects directed at appetite breakthroughs.Susan Hockfield, MITs president, and Paolo Scaroni, CEO of Italian oil association Eni, on Tuesday strictly dedicated the Eni-MIT Solar Frontiers Research Center. Eni invested $5 million in to the center, that is additionally reception a $2 million National Science Foundation grant, pronounced Vladimir Bulovic, the centers director.The printed solar cells, that Bulovic showed at a press discussion Tuesday, are still in the investigate proviso and are years from being commercialized. However, the technique, in that paper is coated with organic semiconductor element utilizing a routine identical to an inkjet printer, is a earnest approach to reduce the weight of solar panels. "If you could have have make use of of a tack gun to implement a solar panel, there could be a lot of value," Bulovic said.Vladimir Bulovic, executive of the Eni-MIT Solar Frontiers Research Center, binds a solar cell printed onto a square of paper to spell MIT. This is the initial paper solar cell, according to MIT and Eni.(Credit:Martin LaMonica/CNET)The materials MIT researchers used are carbon-based dyes and the cells are about 1.5 percent to 2 percent fit at converting object to electricity. But any element could be used if it can be deposited at room temperature, Bulovic said. "Absolutely, the pretence was entrance up with ways to have have make use of of paper," he said.MIT highbrow Karen Gleason headed the investigate and has submitted a paper for systematic examination but it has not nonetheless been published. MIT and Eni pronounced this is the initial time a solar cell has been printed on paper.During the press conference, Scaroni pronounced that Eni is appropriation the core since the association understands that hydrocarbons will in the future run out and believes that solar can be a replacement. At the same time, he said, stream technologies are not sufficient."We are not really active (in pick energy) currently since we dont hold todays technologies are the answer of the problems," he said. Quantum dotsThe paper solar cells are one of most avenues being pursued around nanoscale materials at the Eni-MIT Solar Frontiers Center. Layers of these materials could radically be sprayed utilizing opposite production techniques to have a thin-film solar cell on a plastic, paper, or steel foils.Silicon, the accepted element for solar cells, is permanent and is done from abounding materials. Many companies sell or are building thin-film solar cells, that are less fit but are cheaper to manufacture.Exploring nanomaterials for a solar new thing (photos) During a tour, Bulovic showed one of the centers labs, where researchers have have make use of of a laser to explosion light at nanomaterials for picoseconds. A picosecond is one trillionth of a second. The laser provides interpretation on how the light excites electrons in the material, that will yield clues as to either it will have a great solar cell material, he explained.MIT is focusing most of the bid on quantum dots, or little crystals that are customarily a couple of nanometers in size. A human hair is about 50,000 to 100,000 nanometers thick. By utilizing opposite materials and sizes, researchers can fine-tune the colors of light that quantum dots can absorb, a approach of isolating great possibilities for quantum dot solar cells.Researchers at the core are additionally seeking at opposite molecules or biological elements that can action as solar cell material. These poor thin-film materials can be used on their own or combined to silicon-based solar panels to raise the efficiency, Bulovic said.If 0.3 percent of the U.S. were lonesome with photovoltaics with 10 percent efficiency, solar appetite could furnish 3 times the countrys needs, together with a passing from one to another to electric vehicles, Bulovic said. For example, the easement frame on highways could be coated with element that could constraint appetite from the sun. But dont design a series in solar appetite tomorrow."I"m giving you a total garland of hype," Bulovic pronounced whilst explaining solars intensity during the tour. "It customarily takes 10 years from the time in between when you invent something and you commercialize it." He estimated that most of the technologies in the labs were in the initial 3 years of a five-to-seven-year growth cycle.
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