PCPDTBT is widely used in organic electronics, particularly in the fabrication of organic solar cells. Its ability to absorb a broad range of light wavelengths makes it an effective material for converting solar energy into electricity. The polymer is often employed as an electron donor in bulk heterojunction solar cells, paired with fullerene derivatives or non-fullerene acceptors to enhance charge separation and improve power conversion efficiency. Additionally, PCPDTBT is utilized in organic field-effect transistors (OFETs) due to its semiconducting properties, contributing to the development of flexible and lightweight electronic devices. Its application extends to photodetectors and light-emitting diodes (LEDs), where its tunable electronic properties help optimize device performance.