Roth & Rau reaches 21 percent wafer efficiency

Share

In September, Roth & Rau presented its new heterojunction solar cells at the EU PVSEC, with an efficiency of 20 percent, as verified by the Fraunhofer Institute for Solar Energy Systems. Now, just three months later, the German photovoltaic company says it has hit 21 percent at its research line in Neuchâtel, Germany.

The key, says the company, lies in its HELiA coating system. It explains that the modularly designed system, which has been developed for deposition of TCO and metal layers by sputter deposition, "is capable of depositing uniform, well controlled, thin layers of intrinsic and doped a-Si:H layers onto a textured silicon wafer surface."

In a statement released, the company wrote, "At an output efficiency rate of 20 percent, this technology … already reduces solar electricity generation costs by around 15 percent compared with the latest technology available for traditional crystalline solar cells."

Egbert Vetter, Vice President for R&D added that the next stage is to transferring the new results onto mass production systems; a goal that Roth & Rau is confident will be achieved in the near future.

Popular content

This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact: editors@pv-magazine.com.

Share

Related content

Elsewhere on pv magazine...

Leave a Reply

Please be mindful of our community standards.

Your email address will not be published. Required fields are marked *

By submitting this form you agree to pv magazine using your data for the purposes of publishing your comment.

Your personal data will only be disclosed or otherwise transmitted to third parties for the purposes of spam filtering or if this is necessary for technical maintenance of the website. Any other transfer to third parties will not take place unless this is justified on the basis of applicable data protection regulations or if pv magazine is legally obliged to do so.

You may revoke this consent at any time with effect for the future, in which case your personal data will be deleted immediately. Otherwise, your data will be deleted if pv magazine has processed your request or the purpose of data storage is fulfilled.

Further information on data privacy can be found in our Data Protection Policy.