Purely organic room-temperature phosphorescence sensitizers for OLEDs

Abstract

Organometallic phosphorescent materials have been developed as the critical luminescent materials for organic lightemitting diodes (OLEDs). However, most purely organic room-temperature phosphorescence (RTP) materials without any hevay metals are still lack of competitiveness in OLEDs. Recently, significant progresses have been made in purely organic RTP materials, and their electroluminescence (EL) performances become comparable to those of traditional phosphorescent complexes. In this perspective, the advancements and proposed design strategies of the efficient purely organic RTP materials are summarized. Furthermore, the promising application of these RTP materials as sensitizers for narrow-spectrum multi-resonance emitters is also discussed and outlooked, which is conducive to the development of high-resolution OLEDs.It is expected that this perspective will provide valuable guidelines for advancing robust purely organic RTP sensitizers and further promote the OLED industry.