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Scientist Make Progress Toward Thin 20-Percent-Efficient Crystalline Silicon Cell

Scientists at the Freiburg, Germany-based based Fraunhofer Institute have announced that progress has been made toward a paper-thin 20-percent-efficient crystalline silicon cell. The institute has produced in its laboratories thin crystalline solar cells with a thickness of 37 micrometers and an efficiency value of 20.2 percent.

The solar cell scientists in Freiburg have developed an inexpensive process which allows highly efficient solar cells to be produced even from extremely thin silicon wafers. A decisive step leading toward the successful result is a process that has been developed and patented by Fraunhofer ISE for back-surface contacting of the solar cell. This LFC technology (laser fired contacts) offers an ideal opportunity to combine the potential for high efficiency with low-production costs.

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