MIT Officially Opens Its Solar Energy Center

Massachusetts Institute of Technology (MIT) President Susan Hockfield and Eni CEO Paolo Scaroni celebrated the opening of the Eni-MIT Solar Frontiers Center (SFC). Originally announced in July 2008, the Solar Frontiers Center, headquartered on the MIT campus, promotes research in advanced solar technologies through projects ranging from new materials to hydrogen production from solar energy.

The center is the result of an alliance signed in February 2008 between Eni and MIT. Over the first two years, the center has produced significant scientific and technological breakthroughs including:

• Construction of the first ultra-flexible solar cell;
• Development of the first solar cell printed on paper;
• Advances in the production of virus-based metal contacts for solar cells;
• Development of solar cells that mimic the photosynthetic process;
• Advances in the understanding of how photosynthesis splits water molecules;
• Construction of a prototype to maximize return on investment in solar thermal plants using parabolic mirrors for sustainable deployment of concentrating solar power.

The Eni-MIT Solar Frontiers Center is further evidence of the commitment of Eni to the development of cross-border initiatives in the field of renewable energy, particularly solar energy. Collaboration with MIT promotes the creation of technological and cultural synergies through a multidisciplinary approach. In particular, the cooperation between MIT researchers and those of the “Research Center for non-conventional energy – Eni Donegani Institute” promotes the exchange of expertise through the pursuit of common objectives. In addition to the Solar Frontiers Center, Eni supports projects in energy research at MIT on traditional hydrocarbons, methane hydrates, global climate change and transportation options.

The alliance with MIT has a duration of five years and involves a financial commitment from Eni for $50 million in total, equally distributed between the Solar Frontiers program and the MIT Energy Initiative (MITEI) -— the research group responsible for the study of solutions aimed at transforming the energy system to meet the challenges of the future, of which Eni is a founding member.

The partnership with MIT is the most important of the various strategic alliances and scientific collaborations signed by Eni with universities and centers of excellence worldwide. In 2007, Eni launched the Eni Award to develop improved uses of renewable energy, promote environmental research and cultivate new generations of researchers. This year, Professor Angela Belcher of MIT was selected as the winner in the “Energy renewable and non-conventional” section, for her innovative and fundamental studies on the development of natural systems able to reconvert and use energy.

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MIT Sucessfully Prints Solar Cell On Everyday Paper

Scientists at the Massachusetts Institute of Technology have successfully coated paper with a solar cell, part of a suite of research projects aimed at energy breakthroughs.

Susan Hockfield, MIT’s president, and Paolo Scaroni, CEO of Italian oil company Eni, on Tuesday officially dedicated the Eni-MIT Solar Frontiers Research Center. Eni invested $5 million into the center, which is also receiving a $2 million National Science Foundation grant, said Vladimir Bulovic, the center’s director.

The printed solar cells, which Bulovic showed at a press conference Tuesday, are still in the research phase and are years from being commercialized.

However, the technique, in which paper is coated with organic semiconductor material using a process similar to an inkjet printer, is a promising way to lower the weight of solar panels. “If you could use a staple gun to install a solar panel, there could be a lot of value,” Bulovic said.

The materials MIT researchers used are carbon-based dyes and the cells are about 1.5 percent to 2 percent efficient at converting sunlight to electricity. But any material could be used if it can be deposited at room temperature, Bulovic said. “Absolutely, the trick was coming up with ways to use paper,” he said.

MIT professor Karen Gleason headed the research and has submitted a paper for scientific review but it has not yet been published. MIT and Eni said this is the first time a solar cell has been printed on paper.

During the press conference, Scaroni said that Eni is funding the center because the company understands that hydrocarbons will eventually run out and believes that solar can be a replacement. At the same time, he said, current technologies are not sufficient.

“We are not very active (in alternative energy) today because we don’t believe today’s technologies are the answer of our problems,” he said.

Quantum dots
The paper solar cells are one of many avenues being pursued around nanoscale materials at the Eni-MIT Solar Frontiers Center. Layers of these materials could essentially be sprayed using different manufacturing techniques to make a thin-film solar cell on a plastic, paper, or metal foils.

Silicon, the predominant material for solar cells, is durable and is made from abundant materials. Many companies sell or are developing thin-film solar cells, which are less efficient but are cheaper to manufacture.

During a tour, Bulovic showed one of the center’s labs, where researchers use a laser to blast light at nanomaterials for picoseconds. A picosecond is one trillionth of a second. The laser provides data on how the light excites electrons in the material, which will provide clues as to whether it will make a good solar cell material, he explained.

MIT is focusing much of its effort on quantum dots, or tiny crystals that are only a few nanometers in size. A human hair is about 50,000 to 100,000 nanometers thick.

By using different materials and sizes, researchers can fine-tune the colors of light that quantum dots can absorb, a way of isolating good candidates for quantum dot solar cells.

Researchers at the center are also looking at different molecules or biological elements which can act as solar cell material. These cheap thin-film materials can be used on their own or added to silicon-based solar panels to enhance the efficiency, Bulovic said.

If 0.3 percent of the U.S. were covered with photovoltaics with 10 percent efficiency, solar power could produce three times the country’s needs, including a transition to electric vehicles, Bulovic said. For example, the easement strip on highways could be coated with material that could capture energy from the sun.

web.mit.edu