Xiamen University Sci.Adv: Officially 20.20% (100 cm²)! Dimensional Engineering of Highly Stable and Efficient Large-Area PSC Interlayers Under ISOS-L-3 Aging Test

2025/8/30 9:12:07 admin 阅读 159【次】

A research team led by Chen Mengyu, Huang Kai, and Li Cheng from Xiamen University published a research paper titled "Dimensional engineering of interlayer for efficient large-area perovskite solar cells with high stability under ISOS-L-3 aging test" in the journal Science Advances. Yikai Yun is the first author, and Chen Mengyu, Huang Kai, and Li Cheng are co-corresponding authors.

Key Highlights: This paper promotes the controlled growth of 1D and 2D structures on 3D perovskites through dimensional engineering. Perovskite solar modules (PSMs) using 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-dibenzofuran achieved efficiencies of 20.20% and 22.05% on 10×10 cm² and 6×6 cm² areas, respectively. Under the rigorous ISOS-L-3 accelerated aging test of the PSMs, the n-i-p-type PSCs achieved record-breaking high operational stability.

Using low-dimensional perovskites (LDPs) as interlayer materials for three-dimensional (3D) perovskites has been recognized as a promising strategy for improving the performance of perovskite solar cells. However, the formation mechanism of LDPs and their impact on device performance remain incompletely understood. To address the limitations of LDP interlayers, it is necessary to establish a systematic framework to manage the interactions between organic cations and the octahedral inorganic layer to reveal the formation mechanisms of LDPs of varying dimensionality.

To this end, the Xiamen University team of Chen Mengyu, Huang Kai, and Li Cheng promoted the controlled growth of 1D and 2D structures on 3D perovskites through dimensional engineering. Heteromeric ligands exhibit differences in electrostatic potential distribution and the steric effects of intermolecular forces, leading to distinct LDPs. The 1D structure facilitates charge transfer through preferred channel orientation and energy level alignment. Perovskite solar modules (PSMs) using 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-dibenzofuran achieved efficiencies of 20.20% and 22.05% on 10×10 cm² and 6×6 cm² areas, respectively. Finally, a PSM (6×6 cm²) using poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amino] retained approximately 95% of its initial efficiency after 1000 hours of ISOS-L-3 accelerated aging, demonstrating record-breaking operational stability for n-i-p-type PSCs.

This study provides a readily available strategy to significantly improve the efficiency and stability of large-scale PSMs. Insights into the formation and function of LDP/3D heterostructures in PSCs are provided, confirming a path to commercialization of perovskite photovoltaics.

Source：DOI: 10.1126/sciadv.adp3112

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Xiamen University Sci.Adv: Officially 20.20% (100 cm²)! Dimensional Engineering of Highly Stable and Efficient Large-Area PSC Interlayers Under ISOS-L-3 Aging Test

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