Solliance announced a 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 inch glass substrate using industrial scale-able slot die coating in combination with laser patterning.
Based on previous optimization on 16 cm2 modules, the Solliance team was able to transfer this to a 6x6 inch sized glass substrate using the developed blade coating process and the optimized mechanical patterning technology. 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. Furthermore, 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 record efficiency of a small lab scale perovskite based PV cell is 22.1%. This result, presented on an aperture area comparable to standard commercial silicon solar cells, raises hopes that Solliance is well placed to realize PV upscaling. Solliance stated that these 10% up-scaled perovskite based PV modules are first and important steps in this development, and besides demonstrating the up-scalability of these highly efficient Perovskite based PV devices, Solliance is also currently working to stabilize further the performance of these devices under real life operational conditions.