Tandem perosvkite solar panels

A group of scientists from the University of Wuppertal, the University of Tübingen, the University of Potsdam, HZB, Max Planck Institute and the University of Cologne in Germany recently developed a perovskite-organic tandem solar cell with optimized charge extraction, a high open-circuit voltage and a thickness of just 1 µm.

The tandem configuration includes a narrow-bandgap organic subcell with a p-i-n-type architecture based on the polymer PM6 and molybdenum oxide (MoOx) as the hole extraction layer (HEL). The cell has a power conversion efficiency of 17.5%, an open-circuit voltage of 0.87 V, a short-circuit current of 26.7 mA cm−², and a fill factor of 75%. The wide-bandgap perovskite subcell was built with a perovskite known as FA_0.8Cs_0.2Pb(I_0.5Br_0.5)₃, with an efficiency of 16.8%, an open-circuit voltage of 1.34 V, a short-circuit current of 15.6 mA cm−², and a fill factor of 81%.

The European Commission has recently given the green light to an agreement to finance the NEXUS project, focused on the development of innovative processes for TANGO HJT/Perovskite technology for the production of sustainable and high-performance photovoltaic modules.

Coordinated by the University of Oxford, the NEXUS project is supported by a multidisciplinary consortium with 12 partners from 9 European countries; 5 industrial partners, including 2 small and medium-sized enterprises (SMEs); and 7 research and technology organizations.