Organic solar cells have become a hot research topic because of their low cost, good flexibility, simple process and wide source of raw materials. Receptor materials play an important role in improving the efficiency of organic solar cells. Compared with Fullerene materials, non-Fullerene small molecular materials have attracted attention because of their flexible molecular structure design and high absorption coefficient. At present, the energy conversion efficiency of solar cells with small molecules as receptors has been rapidly improved, and has been exceeded to 18.22%.
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