Halogen-containing ultrathin 2D MOF nanosheets for enhanced stability and efficiency in perovskite solar cells

Halogen-containing ultrathin 2D MOF nanosheets for enhanced stability and efficiency in perovskite solar cells Научная публикация

Журнал

Journal of Energy Chemistry
ISSN: 2096-885X

Вых. Данные

Год: 2026, Том: 115, Страницы: 121-128 Страниц : 8 DOI: 10.1016/j.jechem.2025.11.020

Авторы

Wang Wei ^1,2 , Wang Jiaqi ³ , Zhang Jian ² , Lin Kaifeng ² , Hu Boyuan ² , Zhang Xingrui ² , Dong Yayu ² , Xia Debin ² , Tretyakov Evgeny ⁴ , Yang Yulin ²

Организации

1	College of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001 Henan, China
2	MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001 Heilongjiang, China
3	College of Tobacco Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001 Henan, China
4	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Av. 47, Moscow 119991, Russia

Информация о финансировании (1)

Morphological imperfections and phase segregation at the buried perovskite interface have posed significant challenges to further enhancing the efficiency of perovskite solar cells (PSCs). In this work, a halogen-functionalized porphyrin-based metal–organic framework (MOF) nanosheet, Cu-TCPP(I), is introduced as a multifunctional buffer layer at the SnO2/perovskite interface. The Cu-TCPP(I) nanosheets effectively passivate interfacial defects, regulate crystallization kinetics, and stabilize the photoactive α-phase perovskite against undesirable transition to the δ-phase. This interfacial engineering strategy enhances charge extraction efficiency and suppresses non-radiative recombination, enabling devices to achieve a champion power conversion efficiency (PCE) of 24.62 % with negligible hysteresis. The optimized devices retain 92 % of their initial PCE after 1600 h of storage under ambient conditions, demonstrating excellent operational stability. Importantly, the Cu-TCPP(I) interlayer exhibits strong lead-chelating capability, significantly reducing the risk of lead leakage. This multifunctional interfacial design presents a promising route toward high-efficiency, stable, and environmentally friendly PSCs for large-scale photovoltaic applications.

Wang W. , Wang J. , Zhang J. , Lin K. , Hu B. , Zhang X. , Dong Y. , Xia D. , Tretyakov E. , Yang Y.
Halogen-containing ultrathin 2D MOF nanosheets for enhanced stability and efficiency in perovskite solar cells
Journal of Energy Chemistry. 2026. V.115. P.121-128. DOI: 10.1016/j.jechem.2025.11.020 OpenAlex

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