Mini perovskite solar module with 18% efficiency from CEA-INES The mini panel has a surface of 10 cm². It was built with a manufacturing technique that is claimed to be compatible with the integration of perovskite into heterojunction silicon solar cells in tandem architecture.Researchers at France's National Solar Energy Institute (INES) - an arm of the French Alternative Energies and Atomic Energy Commission (CEA) - have fabricated an 18%-efficient mini perovskite solar module with a surface of 10 cm². The panel was developed with a special perovskite material that is also known as CsxFA1-xPb(I1-yBry)3). The material has no methylammonium and includes ...