Diversity of Luminescent Metal Complexes in OLEDs: Beyond Traditional Precious Metals

Xiaoning Li; Yujun Xie; Zhen Li

doi:10.1002/asia.202100784

Diversity of Luminescent Metal Complexes in OLEDs: Beyond Traditional Precious Metals

Chem Asian J. 2021 Oct 4;16(19):2817-2829. doi: 10.1002/asia.202100784. Epub 2021 Aug 21.

Authors

Xiaoning Li¹, Yujun Xie¹, Zhen Li^{1

2

3

4}

Affiliations

¹ Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, P. R. China.
² Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China.
³ Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou, 350207, P. R. China.
⁴ Wuhan National Laboratory for Optoelectronics, Wuhan, 430074, P. R. China.

PMID: 34378344
DOI: 10.1002/asia.202100784

Abstract

Organic light-emitting diodes (OLED) have attracted increasing attention due to their excellent properties, such as self-luminosity, high color gamut and flexibility, and potential applications in display, wearable devices and lighting. The emitters are the most important composition in OLEDs, mainly classified into fluorescent compounds (first generation), metal phosphorescent complexes (second generation), and thermally activated delayed fluorescence (TADF) materials (third generation). In this review, we summarize the advances of novel emitters of organic metal complexes in the last decade, focusing on coinage metals (Cu, Ag, and Au) and non-precious metals (Al, Zn, W, and alkali metal). Also, the design strategy of d¹⁰ and Au(III) complexes was discussed. We aim to provide guidance for exploring efficient metal complexes beyond traditional phosphorescent complexes.

Keywords: carbene ligands; d10 complexes; organic light emitting diodes; precious metals; thermally activated delayed fluorescence.

Publication types

Review

Abstract

Publication types

Grants and funding