Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

20% Efficient Solar Cell on EpiWafer

14.09.2015

Recently NexWafe GmbH was spun out of the Fraunhofer Institute for Solar Energy Systems ISE, in order to bring the Institute’s kerfless EpiWafer technology to the market and rapid commercialization.

In the EpiWafer technology, a thick crystalline silicon layer is epitaxially deposited and subsequently detached after growth to produce a freestanding wafer of standard thickness.


Epitaxial Wafer (right) detached from re-usable seed wafer (left).

© Fraunhofer ISE

Due to the radical changes in the manufacturing value chain, EpiWafers can be produced at an appreciably lower cost compared to the traditional wafer manufacturing process. The EpiWafer is a direct substitute for conventional n- or p-doped silicon mono-crystalline wafers.

Now, Fraunhofer ISE reports on substantial progress in the development of its EpiWafers, which are seen as a drop-in replacement for conventional Cz wafers. Fraunhofer ISE’s research team in co-operation with NexWafe has optimized all production steps for the EpiWafer.

Analysis of the new n-doped EpiWafers shows that mean minority carrier lifetimes are above 1000 µs, indicating the same quality as n-type Cz wafers. Solar cells processed on these EpiWafers yield 20% efficiency, independently confirmed at the Fraunhofer ISE CalLab. “I am elated about this fantastic result,” says Dr. Stefan Janz, Head of the Department of Silicon Materials.

“This success attests to our fast progress made in only a few months since focusing on EpiWafers.” The solar cells achieve a short-circuit current of 39.6 mA/cm2, a world-record value for epitaxially grown silicon solar cells. The new results will be presented during the coming European PVSEC in Hamburg.

Dr. Stefan Reber, CEO of NexWafe, is also very excited about the new results: “These values demonstrate that our EpiWafer technology is a game-changing technology. It accelerates the shift of the market towards high efficiency modules by providing high quality drop-in mono-crystalline EpiWafers at a very competitive price.”

More information on NexWafe : http://www.nexwafe.com

Contact Person for further information:

Fraunhofer ISE
Dr. Stefan Janz
Phone +49 761 4588-5261
stefan.janz@ise.fraunhofer.de

NexWafe GmbH
Dr. Stefan Reber
Phone +49 761 7661 18600
info@nexwafe.com

Weitere Informationen:

http://www.ise.fraunhofer.de

Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE

More articles from Power and Electrical Engineering:

nachricht Microhotplates for a smart gas sensor
22.02.2017 | Toyohashi University of Technology

nachricht Positrons as a new tool for lithium ion battery research: Holes in the electrode
22.02.2017 | Technische Universität München

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Microhotplates for a smart gas sensor

22.02.2017 | Power and Electrical Engineering

Scientists unlock ability to generate new sensory hair cells

22.02.2017 | Life Sciences

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>