Cathode interface materials based on perylene-diimide derivatives for thickness insensitivity and high fill factor heterojunction organic solar cells

Literature Information

Publication Date 2023-10-18
DOI 10.1039/D3TA04833K
Impact Factor 12.732
Authors

Lei Li, Jie Xu, Wenli Luo, Ke Zhong, Xiaohong Zhao, Yu Hu, Zhongyi Yuan, Yiwang Chen


View Original

Abstract

Cathode interface layers are important to improve the performance of organic solar cells (OSCs). In this work, two perylene diimide (PDI) derivatives (2N-PDI and 2NBr-PDI) as cathode interface materials were reported. Studies of ultraviolet photoelectron spectroscopy (UPS), electron paramagnetic resonance (EPR), atomic force microscopy (AFM), electron mobility, and light intensity dependence were carried out. The results show that 2NBr-PDI has better metal electrode work function (WF) adjustability, film morphology, and electron mobility than PDINO. The device with 2NBr-PDI as the cathode interface layer with PM6:Y6 as the active layer reached a power conversion efficiency (PCE) of 16.18% and a high fill factor (FF) of 78.37%, which is one of the highest values among PM6:Y6 systems. Notably, it exhibits good thickness insensitivity, with PCE remaining at 90% at a thickness of 35 nm, which facilitates future large-scale production.

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Source Journal

Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
Articles per Year: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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