Online workshop presenting project status

An ESPResSo online workshop was organised end of September 2021.
The presentations can be found in the Highlight section under the News-button at the menu on top of this website. 
The following invited speakers, representing six project workpackages, gave a project update:
Tom Aernouts, IMEC: Project overview from the coordinator

Bowen Yang, EPFL: Materials for high performance solar cells

Francesco Di Giacomo, University of Rome: Architectures for high performance modules

Markus Kohlstädt, Fraunhofer ISE: Scalable processes for large-area modules

Maria Hadjipanayi, University of Cyprus: Stable and long-lived performance

Laura Parisi, CSGI - University of Siena: Sustainability assessment and eco-profile

Tom Aernouts, IMEC: Demonstrations and outlook


ESPResSo flyer download here


ESPResSo, an Ambitious EU Funded Collaboration to Make Perovskite Solar Cells a Market Reality

An ambitious 3-year European Union (EU) funded project, “ESPResSo” (Efficient Structures and Processes for Reliable PerovskiteSolar Modules), that gathers known leaders in the field of perovskite PV technology to revolutionize Europe’s photovoltaics (PV) industry has kicked off in April 2018.

 Module assembly smallLeaf shaped module smallBack end interconnect detail small


With its low-cost materials and low temperature deposition processes, perovskite-based PV technology has the potential to takes its place in the thin-film PV market. Perovskite solar cells have already demonstrated high efficiencies (above 22%) that rival those of established mainstream thin-film PV technologies like copper-indium-gallium-selenide (CIGS) and cadmium-telluride (CdTe). The challenge is now to transfer the unprecedented progress that the perovskite PV cell technology has made in recent years from its cell level into a scalable, stable, low-cost technology on module level.


“Every aspect of our lives – from our homes to our workplaces, hospitals, schools and farms - depends on the nonstop availability of energy,” stated Tom Aernouts, imec thin-film photovoltaics group leader and coordinator of this project.  “Perovskite cells demonstrate clear potential to support world’s energy demands cost-effectively. The ultimate aim of the partners of the ESPResSo project is to achieve this by bringing perovskite photovoltaics from the lab to the fab.”


The ESPResSo team targets alternative cost effective materials, novel cell concepts and architectures, and advanced processing know-how and equipment to overcome the current limitations of this technology. The consortium aims to bring the cell performance close to its theoretical limit by demonstrating cell efficiency of more than 24% (on 1cm²) and less than 10% degradation in cell efficiency following thermal stress at 85°C, 85% RH for over 1000h. Scale up activities utilising solution processed slot-die coating and laser processing will additionally deliver modules with more than 17% efficiency showing long-term (>20 years) reliable performance as deduced from IEC-compliant test conditions.


The ESPResSo team also envisions integrating modules in façade elements demonstrating a levelised cost of electricity (LCoE) of ≤ 0.05€/kWh. Prototyping advanced, arbitrary-shaped architectures with specific materials and process combinations will emphasize that new highly innovative applications like on flexible substrates or with high semi-transparency are well accessible in the mid- to longer-term with this very promising thin-film PV technology. 




This project has received funding from the European Union’s H2020 Programme for research, technological development and demonstration under grant agreement n° 764047 of the ESPResSo project.