Synthesis and photovoltaic properties of a small molecule acceptor with thienylenevinylene thiophene as π bridge

A new small molecule acceptor ITVT containing Alkylthienylenevinylene thiophene unit was synthesized. The as-cast PSCs yield a power conversion efficiency (PCE) of 5.84% under the illumination of AM 1.5 G at 100 mW cm−2.213