Organometallic-functionalized interfaces for highly efficient inverted perovskite solar cells

Further enhancing the performance and stability of inverted perovskite solar cells (PSCs) is crucial for their commercialization. The resultant devices achieved a power conversion efficiency of 25.0% and maintained >98% of their initial efficiency after continuously operating at the maximum power point for 1500 hours under simulated AM1.5 illumination.

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• 1 We report that the functionalization of multication and halide perovskite interfaces with an organometallic compound, ferrocenyl-bis-thiophene-2-carboxylate (FcTc 2 ), simultaneously enhanced the efficiency and stability of inverted PSCs.
• 2 The resultant devices achieved a power conversion efficiency of 25.0% and maintained >98% of their initial efficiency after continuously operating at the maximum power point for 1500 hours under simulated AM1.5 illumination.
• 3 Moreover, the FcTc 2 -functionalized devices passed the international standards for mature photovoltaics (IEC61215:2016) and have exhibited high stability under the damp heat test (85°C and 85% relative humidity).

These innovations can translate to real-world improvements in technology, infrastructure, and everyday tools.

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