New Fields, New Opportunities and New Challenges: Circularly Polarized Multiple Resonance Thermally Activated Delayed Fluorescence Materials

Circularly polarized luminescence (CPL) materials that concurrently exhibit high efficiency and narrowband emission are extremely promising applications in 3D and wide color gamut display. By merging the CPL optical property and multiple resonance (MR) induced thermally activated delayed fluorescence (TADF) characteristic into one molecule, a new strategy, namely CP-MR-TADF, is proposed to generate organic emitters with CPL activity, TADF and narrowband emission. High-performance red, green and blue CP-MR-TADF emitters have been developed following this strategy. Herein, the present status and progress of CP-MR-TADF materials in the field of organic light-emitting diodes (OLEDs) is summarized. Finally, for this rapidly growing new research field, the future opportunities are forecasted and the present challenges are discussed.

Automated summary

This article summarizes a new strategy called CP-MR-TADF for generating organic emitters with circularly polarized luminescence (CPL) activity, thermally activated delayed fluorescence (TADF), and narrowband emission. High-performance red, green, and blue CP-MR-TADF emitters have been developed using this strategy. The present status, progress, future opportunities, and present challenges in the field of CP-MR-TADF materials in organic light-emitting diodes (OLEDs) are discussed.