Next-generation perovskite tandem solar cells promise to boost module efficiency from the current range of 22% to 25% up to 35%. The potential utility and durability of this technology as an energy provider during space missions was recently tested by researchers in Germany.

The first satellite mission to evaluate the performance of these cells in space was launched in July 2024 by researchers from the University of Potsdam, Helmholtz-Zentrum Berlin and the Technical University of Berlin. The devices aboard the maiden launch of the new Ariane 6 rocket from Guiana Space Centre by the European Space Agency included perovskite-silicon and perovskite-copper indium gallium selenide (CIGS) solar cells.

Initial data indicate satisfactory performance of the cells 580 miles above the Earth. “The solar cells have survived launch and started to produce energy, even without perfect alignment to the sun,” reported the researchers.

In the tandem cells under extraterrestrial testing, the perovskite layer absorbs the blue-green portion of sunlight, while the CIGS or silicon layers absorb red-infrared light. This configuration lends itself to high power conversion efficiencies.

Future launches will examine the reliability of perovskite single and tandem solar cells in space, focusing on the impacts of the harsh radiation environment and extreme temperature cycles on photovoltaic efficiency.