Efficient Organic Multijunction Solar Films Prepared by Vacuum Roll-to-Roll Production (Printed Electronics Europe 2015)

Dr Martin Pfeiffer, Chief Technology Officer
Heliatek GmbH
Apr 28, 2015.


Europe 2015 Audio Presentation - Heliatek GmbH*

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Presentation Summary

We report on the latest progress on oligomer based vacuum deposited tandem and triple junction solar cells. Efficiencies above 12% together with excellent durability are now routinely achieved for lab scale triple junction cells. The world's first fully integrated roll-to-roll-production tool for organic tandem junction solar cells has been successfully ramped-up and delivers high quality solar films with efficiencies above 7% on the active area.

Speaker Biography (Martin Pfeiffer)

Martin Pfeiffer studied physics in Tübingen, Lancaster and Dresden. In 2000, he obtained the PhD degree from the TU Dresden for a thesis on „Doping of organic semiconductors for use in organic LED and organic solar cells", supervised by Prof. Karl Leo. From 2000 to 2005, he has been leader of the Organic Optoelectronics Group of the Institut für Angewandte Photophysik, TU Dresden. In 2002, he spent four months at Princeton University in the group of Prof. Stephen Forrest. He is cofounder of Novaled AG, Dresden and Heliatek GmbH and since 2006 CTO of Heliatek GmbH.

Company Profile (Heliatek GmbH)

Heliatek GmbH logo
Heliatek is engaged in the development and production of organic photovoltaic solar cells. The company was founded in 2006 and is leveraging organic materials to improve the cost-efficiency characteristics of solar cells for large area applications.
By utilizing vacuum technology, Heliatek is developing a new proprietary material that displays unprecedented power efficiency, transport and contact properties as well as extended life-time characteristics.
In 2010 the company is preparing its production line.
Heliatek's proprietary technology relies on the vacuum deposition of so-called small molecules, a technology proven successful in OLEDs. In contrast, so-called plastic solar cells pursued by other companies are prepared by solution processing (e.g., printing) of polymers.
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