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Organic Photovoltaics
A photovoltaic cell is a specialized semiconductor diode that converts visible light into direct current. Organic photovoltaics (OPV) does so using organic molecules as light absorbers. These organic materials are engineered to have the correct band gaps to absorb most of the solar energy. The field of OPV has two main branches, the route of vacuum-deposited small molecules, and the route of usually wet-printed polymers. Heliatek is the technological leader of vacuum-deposited small molecule OPV.
Organic solar cells will achieve very low production costs when produced in high volumes, since they require only very small amounts of material. This is particularily true when compared to crystalline silicon cell technologies. The production processes require less energy and thus, lead to a significantly reduced energy payback time. Heliatek strives to be the first company to mass-produce vacuum-based OPV cells - OPV at its best in efficiency, stability and productivity.
Heliatek’s tandem cell technology
Heliatek’s competitive edge is based on the ownership of fundamental patents for the manufacturing of doped organic solar cells. Using a unique tandem technology (two cells stacked on top of each other), it is possible to absorb the entire solar spectrum in very thin layers (typically about 200 nm).
Our highly coordinated activities in chemical synthesis and device physics are unique and allow for an optimal cognitive progress. Currently, Heliatek is undergoing the transition from lab to fab with the aim to manufacture low cost, flexible solar cells on an industrial scale using roll-to-roll processes.
