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 Yuan Chang and Patrick Moore win prize for the discovery of two cancer viruses
14.03.2017 | Goethe-Universität Frankfurt am Main

nachricht BMBF funding for diabetes research on pancreas chip
08.02.2017 | 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: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

When Air is in Short Supply - Shedding light on plant stress reactions when oxygen runs short

23.03.2017 | Life Sciences

Researchers use light to remotely control curvature of plastics

23.03.2017 | Power and Electrical Engineering

Sea ice extent sinks to record lows at both poles

23.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>