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News Link • Energy

Heliatek claims new conversion efficiency record for organic PV cells

•, Eric Mack

In 2012 it claimed a then world record 10.7 percent conversion efficiency and said it was gunning for 15 percent in the near future. This week it announced it's halfway there, achieving a new record of 13.2 percent.

Heliatek says its R&D teams achieved the new record using a multi-junction cell and that the measurement was independently confirmed by Fraunhofer CSP's solar testing facility. While traditional silicon cells have achieved higher levels of conversion efficiency, organic cells are also pursued because they can be produced more cheaply and are also more flexible. 

In fact, the firm claims that "the excellent low light and high temperature behavior of the organic semiconductor" in the new cells makes them equivalent to the electricity generation capability of conventional solar cells with 16-17 percent efficiency under real world conditions. 

"This success is based on our chemical research for new organic absorber materials," said Heliatek's Dr. Martin Pfeiffer.

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