Issue 34, 2023

Toward narrowband emission: the chemical strategies for modifying boron-based luminescent materials

Abstract

Organic light-emitting diodes (OLEDs) with high-definition displays require narrowband emission from each pixel. Recently, boron-based thermally activated delayed fluorescence (TADF) emitters have gained broad attention in the OLED research field. They can effectively utilize both singlet and triplet excitons for electroluminescence, resulting in a small full width of half maximum (FWHM). The fused nitrogen/boron (N/B) system, known as the multi-resonance TADF (MR-TADF) system, has been making rapid progress. In this review, we summarize the current research progress in both traditional and MR-type boron derivatives with TADF characteristics from a molecular construction perspective. We discuss the molecular design strategy involved in maintaining high device efficiency and simultaneously achieving a narrowband emission profile. This review aims to provide insight and guidance for future developments for improving the stability, color purity, and performance of boron-based materials.

Graphical abstract: Toward narrowband emission: the chemical strategies for modifying boron-based luminescent materials

Article information

Article type
Review Article
Submitted
06 1 2023
Accepted
16 5 2023
First published
22 5 2023

J. Mater. Chem. C, 2023,11, 11425-11439

Toward narrowband emission: the chemical strategies for modifying boron-based luminescent materials

F. Liu, L. Ding, Y. Yu, M. Li, L. Liao and Z. Jiang, J. Mater. Chem. C, 2023, 11, 11425 DOI: 10.1039/D3TC00065F

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