The instability of the rear electrodes in perovskite solar cells limits the long-term durability of the devices. Now, researchers have developed a composite electrode consisting of Cu–Ni alloy sandwiched between graphene layers to considerably improve the operational stability of perovskite solar cells.
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Xue, J. Secure the electrodes. Nat Energy 7, 476–477 (2022). https://doi.org/10.1038/s41560-022-01040-7