Solliance demonstrated a record 10% aperture area power conversion efficiency for its up-scaled thin-film perovskite photovoltaic modules. The efficiency was measured on an aperture area of 168 cm2. Twenty-five cells were serial connected through an optimized P1, P2, P3 interconnection technology. The PV module was realized on a 6x6 inch2 glass substrate using industrial scale-able slot die coating in combination with laser patterning. Further, the PV module was packaged by applying a flexible barrier using a lamination process.

These results demonstrate the up-scalability of this new thin film PV technology. Apart from the electrodes currently used, all layers can be processed in ambient environment and at temperatures below 120⁰C. This shows the low production cost potential of this new emerging thin film PV technology.

The deposition and interconnection technologies used for obtaining these results are industrially available for sheet-to-sheet as well as for roll-to-roll manufacturing. The latter allows for creating high volume production in the future.

The current world record efficiency of a small lab scale perovskite based PV cell is 22.1%.

“The challenge is to upscale perovskite cells to larger size industrially process-able modules with high efficiency and long lifetimes at low cost. These 10% upscaled perovskite based PV modules are first and important steps in this development. We are confident to boost quickly the upscaled perovskite based PV module efficiency further above 15% by using very low cost materials and processes,” explained Ronn Andriessen, program manager of the perovskite-based PV program at Solliance.

Solliance is conducting advanced research on the development of perovskite-based PV modules and its applications with its industrial partners Nano-C, Solartek, DyeSol and Panasonic.