Solliance achieves 14.5% cell efficiency on perovskite module

Solliance has announced the achievement of a new record performance for its large area perovskite modules, reaching 14.5% conversion efficiency.

The efficiency was achieved on a module based on a 6×6 inch commercial glass substrate and 24 cells connected in series through laser scribes. Stabilized efficiency over the aperture area of 144 cm² was 13.8%, with individual cells showing performance of 14.5%.

According to Solliance, the results obtained demonstrate the scalability of its processes and the commercial potential of its perovskite on glass modules.

“With our newly developed industry compatible large area coating and crystallization processes we were able to scale-up the active area of our solar cell devices with 3 orders of magnitude without any performance loss. This is another important step forward in bringing perovskite based PV modules to the market,” explained Francesco Di Giacomo, senior scientist at Solliance. “At the same time, we are in the process of introducing a much more stable material stack into our large area deposition processes.”

While perovskite cells have achieved efficiencies of up to 22.7% in lab settings, these are typically on very small cells produced using processes far from those that could be used in large-scale production. Solliance points out that it has achieved these results on a module area comparable to that of commercial solar technologies, and with processes that can be scaled up to mass production.

“Apart from the fact that we are confident to boost quickly the up-scaled Perovskite based PV module efficiency further above 15%,” says Solliance Director, Ronn Andriessen, “we are also currently making good progress to stabilize the performance of these devices under real life operational conditions.”

Solliance also recently combined its perovskite with silicon, in the form of a tandem cell structure, with which it was able to realize 26.3% conversion efficiency.