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Ultrafast laser scribes solar cells

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Laura S. Marshall, Managing Editor, [email protected]

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 electricity involves mechanically scribing with a stylus, but this technique is less than ideal: Not only is it slow and expensive, but it also produces imperfect channels. “The efficiency of solar cells depends largely on how accurate your scribing of microchannels is,” said Yung Shin, a professor of mechanical engineering and...Read full article

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    Published: May 2011
    Glossary
    power
    With respect to a lens, the reciprocal of its focal length. The term power, as applied to a telescope or microscope, often is used as an abbreviation for magnifying power.
    scribing
    The process of perforating a silicon or ceramic substrate with a series of tiny holes along which it will break. Nd:YAG or CO2 lasers are now routinely used.
    AmericasCenter for Laser-Based Manufacturingchannelscold ablationenergyGary ChengGreenLightindustrialLaura MarshallMartin Yi ZhangmicrochannelsMicroscopyNational Science FoundationNSFphotovoltaicspowerProceedings of the 2011 NSF Engineering Research and Innovation ConferencePurdue UniversityscribingSeunghyun Leesolar cellsstylusthin filmsthin-film solar cellsultrafast lasersultrafast pulsing laserWenqian HuYung ShinLasers

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