Synthesis of photoelectric properties of novel polymer donors of organic solar cells

The synthesis of new materials plays an important role in organic solar cells.The novel selenophene-containing polymer donor was synthezed by using selenophene based on the D18-Cl structure of D-A type. The novel polymer named D18- Cl-2Se shows a more complementary absorption spectrum with a broad-band gap and a suitable energy level with a deeper HOMO energy level. It means the device will have a higher <i>Voc</i> and <i>Jsc</i>. This study provides a good way to design polymer donors by introducing selenophene to construct high efficiency organic photovoltaic cells.