Scientists provide a new guideline for the synthesis of fullerene electron acceptors

Organic/polymer solar cells represent the most important direction for green energy in the future. Fullerene electron acceptors have been widely used in organic/polymer solar cells as well as perovskite solar cells. A recent study reveals that the photovoltaic performance can be influenced by fullerene stereomer, implying that the stereomeric effect should be considered for new fullerene derivatives designed as electron acceptors.