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Perovskite + printed graphene based solar cells
GRAPHENATON Technologies SA has led development programs for flexible photovoltaic cells combining ink-based films made from various materials (PSS, perovskite, graphene electrodes) that are printed at low temperatures, ultra-lightweight, and adaptable to curved surfaces. This R&D initiative has yielded significant results but has faced economic challenges and is currently on hold.
A Perovskite + Graphene R&D Program
GRAPHENATON Technologies SA has devoted several years, through 2024, to research and development on perovskite solar cells, using graphene as a contact electrode and charge transport facilitator.
La structure des cellules a été validée en laboratoire et des résultats prometteurs ont été obtenus. L’imprimabilité à basse température (< 120 °C) sur substrats souples — contre plus de 1 000 °C pour le silicium — a été démontrée, ouvrant la voie à un photovoltaïque flexible et affranchi du silicium chinois.
Why we put this project on hold
A technology of the future, but one that has not yet achieved economic viability.
Photovoltaic technology combining perovskite and graphene holds great promise for the future—our laboratory work and initial results have confirmed this.
However, as the program progressed toward the production of pre-industrial prototypes, the costs of materials, processes, and stabilization proved difficult to control in light of the expected yield gains and current market conditions. Rather than continue with a development effort whose profitability was not assured, we decided to put the program on hold.
The expertise, intellectual property, and technical know-how are fully preserved. The program may be resumed once the sector has reached technological maturity and the economic conditions are right.
What we have demonstrated
Concrete results obtained in the laboratory now provide a solid technological foundation for future joint development.
Validated cell structure
Perovskite-graphene architecture printed on flexible substrates, characterized and stabilized under laboratory conditions.
Low-temperature printing
Procédé de sérigraphie à < 120 °C maitrisé, compatible avec films polymères flexibles, vs > 1 000 °C pour le silicium cristallin.
Intellectual property rights protected
Technical documentation and expertise are maintained in-house. The resumption of the program will be able to draw on all of this accumulated knowledge.
A sector under close watch, with plans to resume operations once the necessary technological and financial conditions are in place
The perovskite photovoltaic market is evolving rapidly. Perovskite-silicon tandem cells are already achieving efficiency levels exceeding 30% in the laboratory, and progress is being made each year in addressing stability issues.
GTSA continues to monitor these scientific and industrial advancements. Once the technology is mature and market conditions are right, we will resume development of the photovoltaic program, building on the expertise we have accumulated over the years.