114. Dopant-free, amorphous-crystalline heterophase SnO2 electron transport bilayer enables >20% efficiency in triple-cation perovskite solar cells

H. B. Lee, N. Kumar, M. M. Ovhal, Y. J. Kim, Y. M. Song, and J. W. Kang*

Adv. Funct. Mater. 2001559 (2020). (JCR 5%)

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