9,9'-Bifluorenylidene is primarily used in the field of organic electronics due to its unique electronic properties. It serves as a key component in the development of organic semiconductors, which are integral to the fabrication of organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs). Its ability to facilitate efficient charge transport makes it valuable in enhancing the performance of these devices. Additionally, it is utilized in research focused on creating advanced materials for photovoltaic cells, contributing to the improvement of solar energy conversion efficiency. The compound's stability and electronic characteristics also make it a candidate for use in molecular electronics and as a building block in the synthesis of complex organic molecules for various high-tech applications.