26 Sep '13, 5pm

Raising the CPV Bar: New Efficiency Records for Solar Cells And Modules

Raising the CPV Bar: New Efficiency Records for Solar Cells And Modules

Adding a full percentage point in just a few months is significant. CPV's value proposition vs. other solar PV technologies is its higher headroom for ratcheting up cell efficiency, which means more output and ultimately translates to lower LCOE at the system level. Traditional solar-PV cells currently top out in the low-20 percent range; other CPV firms are also in the 44-percent range with three-junction CPV cells but this is the first such mark for a four-junction device. (Here's NREL's multithread cell efficiency record/eyetest chart .) This CPV partnership is rapidly bearing fruit thanks largely to Soitec's background in wafer bonding technology (dubbed "SmartCut," already applied to building semiconductors) and Fraunhofer ISE's experience in epitaxial growth of III-V materials and device characterization, explained Frank Dimroth, project leader on the Fraunhofer side...

Full article: http://www.renewableenergyworld.com/rea/news/article/2013...

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