ZSW research institute claims 19.6% CIS solar cell efficiencies



A new European record has been claimed by the Centre for Solar Energy and Hydrogen Research, Baden-Württemberg, Germany, for copper-indium-gallium-diselenide thin film solar cell, which has produced under pilot production conditions. ZSW said that a 19.6% conversion efficiency had been recorded using an inline multistage process in its automated coating plant. The results have been certified by the Fraunhofer Institute for Solar Energy Systems.

“What’s really special about our success is not the actual efficiency level in itself,” commented Dr. Michael Powalla, Member of the Board at ZSW. “The decisive fact is that we’re producing solar cells and small modules with a CIS plant designed to perform all process steps over the area of 30 cm by 30 cm, representing a pre-industrial scale. This level of development creates the prerequisites for cutting costs as well as increasing efficiency. For such a production-level plant, the
19.6 percent for an active cell area of almost 0.5 square centimetres is actually a world record.”

ZSW has been collaborating with commercial partner, Würth Solar for many years. The thin film PV manufacturer has recorded average volume production efficiencies of 12 percent at its 30MW capacity plant.

Powalla said that he expects commercial module efficiency levels of between 14 and 15% to be achieved within the next few years.


7 December 2022
Intersolar is the world’s leading exhibition & conference series for the solar industry. As part of this event series, Intersolar India in Gujarat is India’s most pioneering exhibition and conference for India’s solar industry. It takes place annually and has a focus on the areas of photovoltaics, PV production and solar thermal technologies. Since 2019, Intersolar India is held under the umbrella of The smarter E India – India’s innovation hub for the new energy world.
24 January 2023
Solar Quality Summit Europe January 24–25, 2023 The Solar Quality Summit Europe in Barcelona will bring together the PV industry to give an overview of market developments and recent technologies, sharing best practices in EPC, O&M, and Asset Management.
1 February 2023
Returning For Its 10th Year | Connecting Project Developers & Capital
Now in it’s 10th year, Solar Finance & Investment Europe is the meeting place for solar developers, asset managers, investors & financiers to learn the latest business models for project finance, re-financing, power purchase agreements as well secondary markets for PV assets. The conference also looks at latest technologies and systems for maximising power output and efficiency, reducing losses and predictive maintenance. The 2023 edition will bring together the largest pool of capital and projects together. Reserve your space now to avoid disappointment.
14 February 2023
Intersolar North America (ISNA) and Energy Storage North America (ESNA) is the premier US-based conference and trade show focused on solar, energy storage, and EV charging infrastructure. Dedicated to accelerating the energy transition, the combined event delivers actionable education, invaluable networking, and an immersive expo hall experience.
22 February 2023
After a record breaking year at the Energy Storage Summit, join us next year at the 8th edition in 2023 where we are expanding in line with the increased opportunity across the renewable sector. As we see this continued growth of the industry through change in government policy, increased capital and a need for grid resilience in geographies with high renewable penetration, can the necessary scale be met across the value chain in order to meet net-zero goals in Europe? We will gather industry leaders across the sector to discuss a range of vital topics including the most lucrative markets for storage and what the best route to market strategy is for your storage asset, changes needed in policy and infrastructure, as well as the effects of the supply crisis, disruptive technologies and much more.
14 March 2023
PV CellTech will be return to Berlin on 14-15 March 2023 and looking at the competing technologies and roadmaps for PV cell mass production during 2024-2026.

Read Next

Subscribe to Newsletter

Most Read

Upcoming Events