Navigation Links
Flexible films for photovoltaics
Date:5/26/2011

This release is available in German.

What do potato chips and thin-film solar cells have in common? Both need films that protect them from air and water vapor: the chips in order to stay fresh and crisp; the solar cells in order to have a useful life that is as long as possible. In most cases, glass is used to protect the active layers of the solar cells from environmental influences. Dr. Klaus Noller from the Fraunhofer Institute for Process Engineering and Packaging IVV in Freising explains the advantages of a plastic film: "The films are considerably lighter and flexible. They make new production processes possible that enable significant reductions in the cost of manufacturing a photovoltaic module." Instead of working with individual glass plates, the solar cells could be printed onto a plastic film and then encapsulated with the barrier film: photovoltaic modules on a roll.

That is not a small goal that the researchers from two Fraunhofer institutes want to achieve: The film and packaging developers led by Dr. Klaus Noller along with Dr. Sabine Amberg-Schwab from the Fraunhofer Institute for Silicate Research ISC in Wrzburg, who is an expert in hybrid polymers, called ORMOCERs an in-house development of the ISC. She and her team worked almost 20 years on developing a coating material on the basis of ORMOCER that can be used as an effective barrier against oxygen and water vapor. What has been created is a barrier lacquer that the researchers combined with another known barrier material: silicon dioxide. "The results were astounding," said Amberg-Schwab: "A barrier effect that is far better than could be expected from adding only the two layers. The reason for this are special effects that are generated between the two materials."

For the ideal application on a film, the team in Wrzburg developed an ORMOCER coating material that is easy to process and cure. The damp heat test was a particular obstacle: the cured lacquer coating must remain stable at 85 degrees Celsius and 85 percent humidity. The solar cells on the roof or the facade are intended to withstand extreme weather conditions and temperatures as long as possible. The folks from the Freisinger institute faced the challenge of developing a process with which the barrier layers can be applied to the film perfectly and economically.

This was achieved with a roll-to-roll process. The painting line was optimized continuously to meet the special requirements: The ORMOCERs must be applied in a dust-free environment, with the layer thickness being extremely thin, yet as a continuous film. During this, the coated side must not touch one of the rollers at any time. That would damage the layer. The patented process makes it possible to manu facture tough high barrier films in a cost-effective and environmentally friendly way. Industrial partners are already using this process. Dr. Sabine Amberg-Schwab from the ISC and Dr. Klaus Noller from the IVV will receive one of the three 2011 Joseph von Fraunhofer Prizes for their developments.


'/>"/>

Contact: Dr. Sabine Amberg-Schwab
sabine.amberg-schwab@isc.fraunhofer.de
49-931-410-0620
Fraunhofer-Gesellschaft
Source:Eurekalert  

Related biology news :

1. Flexible solar strips light up campus bus shelter
2. Flexible neck in cell-receptor DC-SIGN targets more pathogens
3. Flexible electronics could help put off-beat hearts back on rhythm
4. Growing brain is particularly flexible
5. Very cold ice films in laboratory reveal mysteries of universe
6. Bacterial biofilms as fossil makers
7. Biodegradable mulch films on the horizon
8. ChloroFilms announces video contest winners
9. Researchers create freestanding nanoparticle films without fillers
10. Pitt gets $11.8 million to develop microbicide films for HIV prevention
11. Radically simple technique developed to grow conducting polymer thin films
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Flexible films for photovoltaics
(Date:5/16/2017)... 16, 2017  Veratad Technologies, LLC ( www.veratad.com ), ... and identity verification solutions, announced today they will participate ... May 15 thru May 17, 2017, in ... Trade Center. Identity impacts the lives ... today,s quickly evolving digital world, defining identity is critical ...
(Date:4/18/2017)... a global expert in SoC-based imaging and computing solutions, has developed ... the company,s hybrid codec technology. A demonstration utilizing TeraFaces ® , ... showcased during the upcoming Medtec Japan at Tokyo Big Sight April ... Vegas Convention Center April 24-27. ... Click here for an image of the M820 ...
(Date:4/11/2017)... Research and Markets has announced the addition of the "Global ... ... at a CAGR of 30.37% during the period 2017-2021. ... based on an in-depth market analysis with inputs from industry experts. ... the coming years. The report also includes a discussion of the ...
Breaking Biology News(10 mins):
(Date:9/22/2017)... ... September 22, 2017 , ... ... is now being assessed in clinical trials in the United States. (clinicaltrials.gov : ... your nurse or physician or find your nearest participating clinic here https://factor-therapeutics.com/clinical-trials/ ...
(Date:9/21/2017)... , ... September 21, 2017 , ... Dr. Greg Leyer, ... Vegas, NV on September 27th. His presentation is at 12:10pm in the Probiotics Resource ... to present at SupplySide West and discuss how probiotics have shown impressive data in ...
(Date:9/21/2017)... ... September 21, 2017 , ... Colpitts Clinical has launched the ... includes new features that facilitate streamlined and compliant communication, file sharing and document ... forefront of medical advancements, they rely on efficiencies to help them address the ...
(Date:9/21/2017)... New Jersey (PRWEB) , ... September 21, 2017 ... ... highly-regulated pharmaceutical and clinical research sector professionals, has announced the addition of 5 ... Part 11 training - Compliance with Regulation 21 CFR Part 11 on ...
Breaking Biology Technology: