06/19/2009

 


In a joint R&D-project Heliatek has achieved an outstanding record value for organic solar cells based on vacuum deposited small molecules: a power conversion efficiency of 5.9% for an active area of 2 cm² has been confirmed by the National Renewable Energy Laboratory (NREL).  The novel solar cell is based on Heliatek's proprietary p-i-n tandem cell architecture.The coloured layers that harvest the sun light are embedded in a system of "p- and n-doped" layers where the organic dopant molecules are provided by Novaled AG, Dresden. The doping technology for organic semiconductors has been developed in the recent years at IAPP and its spin-off Novaled. It is already successfully used in OLEDs.
 
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