New silicon solar cells
Recently, the University of Illinois at Urbana - Champaign (University of Illinois at Urbana-Champaign), John Rogers (John Rogers) led scientists have discovered a new high-efficiency silicon solar cell production method. This approach produced highly flexible silicon solar cells and scalability, you can roll a pencil, but also may even be as transparent windows of the building and automotive glass coloring agent.
Published in the online journal "Nature - Materials" (Nature Materials) said in a report on, you can use a new approach to traditional silicon processing, about fine crackers, cut into thin fragile silicon micro- wafer, then carefully transfer them to another extension of a flexible material surface.
Rogers, a leader in the new study, said: "We can be confused super-thin silicon wafers, can be attached to any of the plastic curl. Wafers can also be made into film or film-like, mixed with the glass in the building. This building material into the space utilization of solar energy development platform. "
As global oil prices, coupled with fears of global warming, greatly increased the demand for solar cells.
Many companies in the world, the Japanese consumer electronics manufacturers such as Sharp Corporation (Sharp Corp) and the German solar giant Q Battery Company (Q-Cells) are produced thin film solar cells, however, these thin film solar cells convert solar energy into electricity in the generally less than on the efficiency of traditional solar cells.
Rogers said that their technology is used in conventional silicon, they are "durable, high efficiency, but the current situation is too rigid and therefore seems very fragile." Rogers they adopted a method of dealing with these silicon etching. Silicon surface in a large scrape small pieces, these pieces of silicon wafers thinner than thin 10 times to 100 times, and because the small size and easier to use.
After the silicon debris scraped off with the equivalent of a "rubber stamp" of the device picks up the pieces, and then they are "printed" to the surface of other substances.
Rogers said: "These silicon debris scraped off like ink. Scraped off after the large thin pieces of silicon wafer surface to become a 'stamp pad'. Only with the 'seal' will 'stamp pad' in the silicon debris 'Indian' to other surfaces can be. "
He said that as long as the final step will be to use electronic equipment in the power of solar cells derived on it.
Improve the flexibility of silicon material makes the silicon solar cell is more lightweight, easy to carry. Rogers for the bright future of silicon solar cells will be "rolled up like a carpet can be stuffed into the truck."
He said the newly established North Carolina, Durham County, Semprius company is negotiating up the technology.
Rogers said: "We just use a different way of things we have known."
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