Homogeneously Miscible Fullerene inducing Vertical Gradient in Perovskite Thin‐Film toward Highly Efficient Solar Cells

Fullerene‐based n‐type charge‐collecting materials have emerged as a solution for high‐performance perovskite solar cells. However, their application to perovskite solar cells is limited in the device architecture and only a small amount of fullerene additives have been introduced to the device syst...

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