Solliance demonstrates perovskite PV module with 10% efficiency

Solliance, a European thin-film solar research alliance, on Friday said it has demonstrated a record 10% power conversion efficiency for up-scaled thin-film perovskite photovoltaic (PV) modules.

The achievement shows the up-scalability of the technology, says Solliance, which brings together research and development (R&D) organisations from the Netherlands, Belgium, Germany and Australia.

The 10% efficiency was measured on an aperture area of 168 sq cm, comparable to standard commercial silicon solar cells. Twenty-five cells were serial connected through an optimized P1, P2, P3 interconnection technology.

Apart from the electrodes currently used, all layers can be processed in ambient environment and at temperatures below 120 degrees Celsius.

"The challenge is to upscale perovskite cells to larger size industrially processable modules with high efficiency and long lifetimes at low cost [..] These 10% up-scaled perovskite based PV modules are first and important steps in this development," said Ronn Andriessen, programme manager of the perovskite-based PV programme at Solliance. He expressed confidence in quickly boosting the up-scaled perovskite PV module efficiency above 15%.

Currently, the world record efficiency of a small lab-scale perovskite PV cell is 22.1%

Solliance's industrial partners on the perovskite modules research are Nano-C, Solartek, DyeSol and Panasonic. Andriessen said the alliance was also working to stabilise further the performance of the perovskite devices under real-life conditions.

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