Journal
ECOMAT
Volume 4, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/eom2.12156
Keywords
cathode interlayer; charge extraction; device efficiency and stability; non-fullerene organic solar cell
Categories
Funding
- National Natural Science Foundation of China [62074102]
- Science and Technology Plan Project of Shenzhen [JCYJ20190808153409238]
- Key Project of Department of Education of Guangdong Province [2018KZDXM059]
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This review summarizes the recent progress of cathode interlayer materials in non-fullerene organic solar cells and systematically describes their impact on device efficiency and stability.
Non-fullerene acceptors are currently a hot research area in the development of organic solar cells (OSCs). At present, the-state-of-the-art power conversion efficiency (PCE) of non-fullerene organic solar cells (NF-OSCs) with single and multiple-junction has surpassed 18% and 19%, respectively. The cathode interlayer (CIL) plays a significant role in the improvement of PCE and the stability of OSCs. Recently, a large number of CIL materials have been employed in OSCs. This review summarizes the recent progress of CIL materials and systematically describes their impact on the device efficiency and stability in single-junction NF-OSCs. Firstly, the functions, key requirements, and distinctive features of CILs when used in NF-OSCs are summarized. Afterward, some big families of materials including metal oxides, metal salts/complexes, small molecules, polymers, composites/hybrids are presented as CIL for NF-OSCs. Finally, the scale-up techniques, conclusion, and future challenges regarding CIL in NF-OSCs are elucidated.
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