Application of Organic Small Molecule Photosensitizers and N719 Co-Sensitization in Dye-Sensitized Solar Cells

As a promising low-cost solar energy conversion technology, dye-sensitized solar cells have attracted widespread attention from researchers due to their low cost, simple preparation method, low toxicity, and easy production. Improving the functional conversion efficiency of batteries has always been an important research direction in this field to obtain more commercial application prospects. Compared to a single photosensitive molecule, the combined action of multiple photosensitizers sometimes exhibits superior photovoltaic performance. In order to provide people with a better understanding of the extraordinary changes brought about by co-sensitization, this article introduces the research results of co-sensitization of various photosensitive dyes with N719 in the past 10 years from different perspectives according to the types of anchoring groups (cyanoacrylic acid, carboxyl group, rhodanine acetic acid, pyridine, and cyanoethylene benzoic acid), hoping to assist with further research on co sensitization mechanisms in the future.