Synthesis and Characterisation of Scalable n-Type Organic Semiconducting Materials for Solar Cells and Transistors

Organic semiconducting materials are widely used in energy and electronic devices such as organic and perovskite solar cells (OSCs, PSCs) and organic filed-effect transistors (OFETs) due to their low cost, solution processability, and energy level tunability. However, successful non-fullerene acceptor (NFAs) like Y6 is not appropriate for large scale production. Here, we used diketopyrrolopyrrole (DPP), a versatile dye to develop scalable NFAs through sustainable synthetic approach. Our synthesised DPP based NFAs demonstrated the compatibility in OSCs, PSCs and OFETs, with high electron mobility, thermal stability, and improved power conversion efficiency in PSCs.