He works at the interfaces between physics, chemistry, and materials science, focusing on the development of novel optoelectronic devices for energy technologies.

Prof. Gao’s group dedicates its efforts to energy devices, with the ambition to both improve device performance and understand the underlying fundamentals. Their current investigations include organic semiconductors and metal halide perovskites, with research focuses such as:
Fullerene-free organic solar cells, including low voltage losses, green solvent processing and new applications.