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Perovskite solar cells (PSCs) have demonstrated over 25% power conversion efficiency (PCE) via efficient surface passivation. Unfortunately, state‐of‐the‐art perovskite post‐treatment strategies can solely heal the top interface defects. Herein, an ion‐diffusion management strategy is proposed to concurrently modulate the top interfaces, buried interfaces, and bulk interfaces (i.e., grain boundaries)...
The buried interface in perovskite solar cells (PSCs) is pivotal for achieving high efficiency and stability. However, it is challenging to study and optimize the buried interface due to its non‐exposed feature. Here, a facile and effective strategy is developed to modify the SnO2/perovskite buried interface by passivating the buried defects in perovskite and modulating carrier dynamics via incorporating...
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