Synthesis of Quaterrylene-based Dyes as possible NIR sensitizers in Dye-Sensitized Solar Cells

Photovoltaic cells based on semiconductor technology are, nowadays, the most efficient and easily available systems for solar energy conversion. Dye-Sensitized Solar Cells (DSSCs) are very promising owing to low production costs, transparency and ability to harvest diffused light.1 Building Integrated PhotoVoltaics (BIPV) based on DSSC are an emerging application to make DSSC more attractive in the energy production field. An innovative and powerful approach resides on the implementation of colourless DSSCs based on NIR sensitizers such as polymethine and rylene dyes.2,3 In this work, we present the synthesis of two quaterrylene dyes to evaluate their application as NIR-sensitizers in DSSCs.