Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Frank Feldmann Receives SolarWorld Junior Einstein Award 2016

27.06.2016

Two Scientists, Two Institutes, One Goal: Highest Efficiency Solar Cells

For the eleventh year in a row, SolarWorld’s prestigious Junior Einstein Award has been awarded to excellent young scientists and engineers. At the award ceremony, which took place during the Intersolar Europe in Munich on June 22, 2016, the German solar company presented this year’s award to two young scientists: Dr. Frank Feldmann of the Fraunhofer Institute for Solar Energy Systems ISE and his scientific colleague Dr. Udo Roemer of the Institute for Solar Energy Research in Hameln.


SolarWorld Junior Einstein Award 2016. (f.l.t.r.) Frank Asbeck, founder and CEO of SolarWorld, the award recipients Dr. Frank Feldmann and Dr. Udo Römer and jury chairman Dr. Holger Neuhaus.

© SolarWorld AG/Milton Arias

The jury of the international competition honored both researchers for their groundbreaking work on passivated contacts, which enables considerably higher silicon solar cell efficiencies.

In his doctoral thesis, Frank Feldmann laid the foundation for a new world record efficiency of 25.1 percent for both sides-contacted silicon solar cells. Announced in its Press Release 27/2015 (https://www.ise.fraunhofer.de/en/press-and-media/press-releases/press-releases-2...), Fraunhofer ISE brought the world record to Germany surpassing the former record for the first time in twenty years. “Frank Feldmann succeeded by using a totally new approach that demonstrates a clear upward potential,” says Jury Chair Dr. Holger Neuhaus.

The full-area passivated back contact, developed by Frank Feldmann, is the special feature of the 25.1% silicon solar cell manufactured at Fraunhofer ISE. To achieve efficiency improvements, the focus was previously on increasingly complex cell structures. In the new concept, the entire rear cell surface can be contacted without any patterning. Compared to the high efficiency solar cell structures, the manufacturing process is simpler and the efficiency higher.

“I am very pleased to receive this award,” says the award recipient from Freiburg. “First, I would like to thank the jury. Many thanks also goes to my thesis supervisor, Prof. Dr. Oliver Paul at the Faculty of Engineering, University of Freiburg and the second supervisor, Prof. Dr. Gerard Willeke, at Fraunhofer ISE.

Frank Feldmann is a member of the research team led by Dr. Martin Hermle, department head of “High Efficiency Silicon Solar Cells” at Fraunhofer ISE. The group around Hermle is working on the so-called TOPCon-Technology (Tunnel Oxide Passivated Contact), in which metal contacts are applied to the rear side without patterning. The selective passivated contact developed by Feldmann allows the majority charge carriers to pass and prevents the minority carriers from recombining. The thickness of the intermediate passivation layer is reduced to one or two nanometers, allowing the charge carriers to “tunnel” through it. Subsequently, a thin coating of highly doped silicon is deposited over the entire layer of ultra-thin tunnel oxide. This novel combination of layers allows electrical current to flow out of the cell with nearly zero loss.

In the photovoltaics industry, the majority of solar cells have an aluminum-alloyed back contact covering the entire rear side. This type of contact, however, limits the efficiency. Therefore, the industry currently retrofits their production to incorporate the PERC (Passivated Emitter Rear Cell) technology in order to increase the solar cell efficiency. With PERC technology, only a small area on the rear side is contacted in order to reduce recombination. PERC, however, requires additional patterning steps and leads to longer current conduction paths in the silicon wafer. TOPCon, on the other hand, offers a possible approach to reduce these loss mechanisms and increase the efficiency.

Prof. Dr. Stefan Glunz, division director of “Solar Cells – Development and Characterization” is pleased that a young researcher at Fraunhofer ISE has again received the SolarWorld Junior Einstein Award. “With his research work, Frank Feldmann has made an important contribution to the evolutionary development of both sides-contacted silicon solar cells.”

Including Frank Feldmann, this is the fifth SolarWorld Junior Einstein Award that has been given to a young researcher at Fraunhofer ISE. The others are: Oliver Schultz 2008, Paul Gundel 2001, Pierre Saint-Cast 2013 and Michael Rauer 2015.

Weitere Informationen:

https://www.ise.fraunhofer.de

Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE

More articles from Awards Funding:

nachricht ERC: Six Advanced Grants for Helmholtz
10.04.2017 | Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren

nachricht German Federal Government Promotes Health Care Research
29.03.2017 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

All articles from Awards Funding >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>