Journal
SOLAR RRL
Volume 5, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202000592
Keywords
incomplete orthogonal solvents; layer-by-layer solution processing methods; nonorthogonal solvents; organic solar cells; orthogonal solvents
Funding
- National Natural Science Foundation of China (NSFC) [61775029, 61604035, 51533005]
- International Cooperation and Exchange Project of Science and Technology Department of Sichuan Province [2019YFH0059]
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The layer-by-layer (LbL) solution processing method for organic solar cells (OSCs) is a simple and effective way to fabricate OSCs, achieving high efficiency. It allows for separate adjustment of different layers to optimize performance and has the potential for advancements in large-area device preparation.
Organic solar cells (OSCs) have attracted wide attention due to their economy, environmental protection, and potential for large-scale commercial production. The layer-by-layer (LbL) solution processing method, where donor solution and acceptor solution are coated sequentially, is a simple and effective way to fabricate OSCs, achieving a high power conversion efficiency (PCE) of up to 17%. Compared with bulk-heterojunction (BHJ) OSCs, LbL solution-processed OSCs separately adjust different layers, making the components distribute ideally in the vertical direction that is beneficial for exciton dissociation, charge transport, and charge collection. Moreover, the LbL approach has better potential in the preparation of large-area devices, which is a key link in the commercialization of OSCs. Herein, the basic principles and the latest research progress of LbL solution-processed OSCs are summarized, and the existing challenges and prospects of the LbL solution processing method in industrial production are discussed.
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