On May 28, 2025, a team led by Professor Pei Jian from the College of Chemistry and Molecular Engineering at Peking University unveiled a transformative research outcome in the prestigious journal Nature. For the first time, they have developed light-activatable dopant precursor molecules, coined as iPADs, which, upon exposure to light, convert into highly active dopants (PADs). This innovation enables efficient, precise, and in-situ doping of organic polymer semiconductors. This groundbreaking strategy surpasses the limitations of traditional doping methods in terms of regional accuracy and controllability, achieving sub-micron ultra-high precision n-type doping with a conductivity exceeding 30S/cm.

This technological advancement is poised to revolutionize the industry by enhancing flexible display resolution, boosting the sensitivity of intelligent sensor chips, and accelerating the industrialization of organic integrated circuits. This accomplishment not only redefines the doping technology for organic polymer semiconductors but also provides critical technical support for the miniaturization and high-density integration of organic integrated circuits, marking a significant leap forward in the field.