The two-terminal tandem solar cell efficiency was certified by the Fraunhofer Institute for Solar Energy Systems ISE and the results were presented this week at the WCPEC conference held in Waikoloa, Hawaii. Image: Oxford PV
Perovskite solar cell developer Oxford Photovoltaics (PV) has produced a 1 cm2 perovskite-silicon two-terminal tandem solar cell with a verified conversion efficiency of 25.2%, through an ongoing collaboration with Helmholtz-Zentrum Berlin (HZB) and the Photovoltaics and Optoelectronics Device Group at the University of Oxford, led by Professor Snaith.
The two-terminal tandem solar cell efficiency was certified by the Fraunhofer Institute for Solar Energy Systems ISE and the results were presented this week at the WCPEC conference held in Waikoloa, Hawaii.
Dr Chris Case, Chief Technology Officer at Oxford PV commented, “The unique, optically enhanced architecture developed as part of this collaboration, minimises losses, and has helped us achieve this record setting efficiency.”
“With our combined progress in efficiency, stability and reliability, our perovskite-silicon tandem solar cell technology is now reaching its commercial potential. As with any new technology, the biggest challenge is transferring the technology from the lab and scaling up to high volume manufacturing. The company has already made great progress in this respect and our industrial pilot line is producing commercial sized 156 mm x 156 mm perovskite-silicon tandem solar cells for validation by our development partner – a major manufacturer of silicon solar cells and modules.”
The two-terminal design is intended to simplify the integration into PV module fabrication, compared to four terminal architectures often used in scientific research, eliminating additional materials, weight and power invertor challenges found in four-terminal tandem cells.
SENperc PV - a thin film measurement tool from SENTECH providing superior quality control in PERC, TOPcon, and HJT cell manufacturing
Dec 02, 2020
This PV Tech TechTalk Product Series webinar, in partnership with SENTECH Instruments, will introduce you to the innovative SENperc PV tool. It is designed for quality control in PV cell manufacturing and adds support for leading-edge PERC, TOPcon, and HJT cell processing.
Mar 09 - Mar 11, 2021
Understand fully the technical and logistical supply chains that determine the production and performance of solar modules, including all related factors impacting quality, reliability & bankability. This event will be run online with streamed content and online networking.