Utilizing symmetric small molecule (1,2-diformylhydrazine) as perovskite precursor additive enables the regulation of residual strain and the passivation of defects. The optimized inverted perovskite solar cells achieved a maxumum power conversion efficiency of 25.12% and the unencapsulated devices maintained 82.35% of the initial efficiency after 310 thermal cycling tests.
Y. Guo, S. Wang, J. Zhang, W. Wu, Y. Zhang, C. Huang and H. Zhou, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC02269C
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