Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

TLDR

Circularly polarized luminescent materials, characterized by optical rotation, selective polarized emission, and circular dichroism, have attracted attention and are used in optical data storage, LCDs, and 3D display backlights. This review summarizes recent progress and discusses opportunities and challenges of circularly polarized luminescent materials for organic optoelectronic devices. The review systematically introduces the definitions, measurement techniques, and design strategies for these materials, covering complexes, luminophores, polymers, supramolecules, and liquid crystals. Materials exhibit varying g lum values, are applied in high‑performance optoelectronic devices, and those with large g lum and high efficiency are promising for organic optoelectronic applications.

Abstract

Abstract Due to the characteristics of optical rotation, selective emission of polarized light, and circular dichroism, circularly polarized luminescent materials have aroused extensive attentions, and they have exhibited wide optoelectronic applications, such as optical data storage, liquid crystal display, and backlights in 3D displays. Here, the research progress of circularly polarized luminescent materials for organic optoelectronic devices is summarized. First, the definition and measurement of the circularly polarized light, such as optical rotatory dispersion, circular dichroism, and circularly polarized luminescence, are systematically introduced. Subsequently, the design strategies for various kinds of circularly polarized luminescent materials, including luminescent lanthanide and transition‐metal complexes, small organic luminophores, conjugated polymers, supramolecules, and liquid crystals are summarized. These materials exhibit circularly polarized luminescence with different magnitudes of luminescence dissymmetry values ( g lum ). They are further applied in optoelectronic devices with excellent performance, and the influence factors on the g lum values of these materials are presented in detail. Finally, the current opportunities and challenges in this rapidly growing research field are discussed systematically. The circularly polarized luminescent materials with large g lum and high luminescence efficiency are very promising for applications in organic optoelectronic fields.