The main objective of ACT-FAST is to develop the first high efficiency fully TF tandem SCs. Cells will be based on emerging earth abundant antimony chalcogenides, using novel and low-cost techniques, low environmental impact materials, scalable depositions processes, and novel tandem interconnection approaches. This will yield a technology compatible with a future upscaling for mass deployment. The project aims to exploit the key benefits of antimony chalcogenides:
i) low fabrication temperatures,
ii) high stability,
iii) low environmental impact,
iv) low carbon footprint, and
v) high versatility, to deliver on the vast potential of high efficiency TF tandem devices.
The development of full TF tandem devices in ACT-FAST will allow the extension of these device concepts to novel lightweight and/or mechanically flexible solar modules.
The project will address development of new generation SCs based on innovative Sb-chalcogenides with tenable band gap to design highly efficient 4T tandem devices. However, in the framework of the project, the focus will be set on a full TF Sb chalcogenide 4T tandem device.
