“This success is based on our chemical research for new organic absorber materials,” said Martin Pfeiffer, chief technology officer of Heliatek.
The cell is a multi-junction cell combining three different absorbers. Each absorber is dedicated to efficient conversion into electricity of green-, red- or near-infrared light of the wavelength range 450 and 950 nm. These absorber molecules have been patented by Heliatek.
“It validates our choice to internalize our R&D, both by developing new absorber molecules and optimizing the device architecture," said Thibaud Le Séguillon, CEO of Heliatek, of the results. "This will provide the baseline for efficiency in our large-volume manufacturing line. With our HeliaFilm, we are clearly executing our strategy to provide decarbonized, decentralized energy generation directly on buildings all over the world.”
The record efficiency was measured at simulated AM 1.5 illumination and was confirmed by the Fraunhofer Center for Silizium-Photovoltaik in Halle, Germany, a recognized center for independent verification of solar cell performance results under standard testing conditions.