This review summarizes the research progress of pure organic room-temperature phosphorescent (RTP) materials with thermally activated delayed fluorescence (TADF) properties, elaborates on the photophysical mechanism of TADF-RTP dual-channel emission, and concludes the molecular design strategies including crystal engineering, host-guest interaction and polymer doping. It clarifies the approaches for regulating the reverse intersystem crossing (RISC) process and inhibiting triplet non-radiative decay, introduces the application examples in fields such as anti-counterfeiting, OLED devices and bioimaging, analyzes their performance advantages including low toxicity, long lifetime and high quantum yield, and presents the challenges and directions for future development.

thermally activated delayed fluorescence (TADF), organic room-temperature phosphorescent material; reverse intersystem crossing (RISC)