Role of Fullerene ICxA and Non-fullerene Y6 in P3HT-based Ternary Organic Photovoltaics

In recent years, organic photovoltaics (OPVs) have emerged as a promising technology for producing renewable energy. Developing high-performance ternary OPVs requires the discovery of new compounds. In this comprehensive study, we investigated the role of fullerene ICxA and non-fullerene Y6 acceptors as third components in improving the performance of P3HT-based ternary OPVs. Our devices exhibited the good light-harvesting ability of the non-fullerene acceptor and the efficient electron mobility of the fullerene acceptor. Raman and X-ray diffraction (XRD) tests show that increasing the ICxA content increases the molecular order of the ternary thin films, whereas increasing the Y6 content reduces their crystallisation. Results showed the synergistic effects of the weight ratio and the additional component on OPV performance.