31.3 percent efficiency for silicon-based multi-junction solar cell

03/25/2017 | Print view

Researchers from Fraunhofer ISE reached a new world record of 31.3 percent efficiency for a silicon based solar cell. - © Fraunhofer ISE — © Fraunhofer ISE

Researchers from Fraunhofer ISE reached a new world record of 31.3 percent efficiency for a silicon based solar cell.

Researchers from Fraunhofer ISE reached a new world record efficiency of 31.3 percent for a silicon based-multi-junction solar cell.

Silicon solar cells dominate the global photovoltaic market today with a share of 90 percent. With ever new technological developments, research and industry are nearing the theoretical efficiency limit for semiconductor silicon. At the same time, they are forging new paths to develop a new generation of even more efficient solar cells.

Surpassed own record within a few months

A few months ago, Fraunhofer ISE reached a record efficiency for a triple-junction solar cell made of III-V and silicon material. Now, in the short amount of time, the researchers in Freiburg have surpassed their own record. Their newest result boasts an efficiency of 31.3 percent for a fully integrated silicon-based multi-junction solar cell.

Easy integration into a solar module

The outer appearance of the new solar cell looks no different than a conventional silicon solar cell. With a simple front and rear contact, the record solar cell can be integrated into photovoltaic modules in the same manner. (HCN)

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