Heliatek Claims Record Efficiency For Organic Photovoltaic Cells

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Germany-based manufacturer Heliatek claims it has set a new world record for the direct conversion of sunlight into electricity using organic photovoltaic (OPV) cells. The company says its researchers reached 13.2% efficiency using multi-junction OPV cells, and the measurement was independently confirmed by Fraunhofer CSP.

According to Heliatek, its multi-junction cell combines three different patented absorbers. Each of them is dedicated to convert green-, red- or near-infrared light of the wavelength range between 450 nm and 950 nm into electricity.

The new efficiency was measured at simulated AM 1.5 illumination, and the company says this new record supports its roadmap toward 15%-efficient organic solar cells.

“This success is based on our chemical research for new organic absorber materials,” comments Martin Pfeiffer, chief technology officer of Heliatek. “Key to this success is the close cooperation of our physics and chemistry R&D teams, which leads to an optimal combination of the properties of this new solar cell design.”

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