News Article

Luxembourg’s Low Cost Solar Cells Hold New European Record

By combining copper, zinc, tin, and sulphur or selenium, all abundant and low cost elements, the University of Luxembourg has produced a solar cell with 6.1 % efficiency.

The Laboratory for Photovoltaics of the University of Luxembourg has developed an improved preparation process for kesterite solar cells, which resulted in a new European record efficiency of 6.1 percent.

The efficiency has been certified by the Fraunhofer Institute for Solar Energy Systems, one of eight labs in the world that is authorised to certify solar cell efficiencies.

Kesterites combine the low cost of thin film solar cell technologies with extremely low raw material cost. Their main component consists of copper, zinc, tin, and sulphur or selenium, all abundant and low cost elements.

Several labs have reported that the loss of tin during preparation limits the ability to control deposition processes. The Laboratory for Photovoltaics has therefore developed a preparation process that allows controlling the tin loss and has in the first attempt led to the record efficiency. Details of the preparation process have been published in the Journal of the American Chemical Society.

"With this first success we are now able to understand the further limitations of these solar cells. This will help us to improve the efficiency further" says Susanne Siebentritt, head of the Laboratory for Photovoltaics. This laboratory was founded in Luxembourg in April 2007 within the framework of the TDK Europe professorship, a public-private partnership funded by TDK Corporation and the University of Luxembourg.

Thin film solar cells are currently significantly increasing their market share, because of their low production cost. These are mostly based on considerably lower material and energy consumption compared to conventional wafer technologies.

The Laboratory for Photovoltaics of the University of Luxembourg is a group of researchers developing new materials and processes for solar cells. The laboratory also focuses on furthering the physical understanding of the materials and interfaces involved in these solar cells.
CS International to return to Brussels – bigger and better than ever!


The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.


Join us face-to-face between 28th – 29th June 2022

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email info@csinternational.net  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!

Register


×
Search the news archive

To close this popup you can press escape or click the close icon.
×
Logo
×
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
Live Event