Inheriting the Characteristics of TADF Small Molecule by Side-Chain Engineering Strategy to Enable Bluish-Green Polymers with High PLQYs up to 74% and External Quantum Efficiency over 16% in Light-Emitting Diodes

Guohua Xie; Jiajia Luo; Manli Huang; Tianheng Chen; Kailong Wu; Shaolong Gong; Chuluo Yang

doi:10.1002/adma.201604223

Inheriting the Characteristics of TADF Small Molecule by Side-Chain Engineering Strategy to Enable Bluish-Green Polymers with High PLQYs up to 74% and External Quantum Efficiency over 16% in Light-Emitting Diodes

Adv Mater. 2017 Mar;29(11). doi: 10.1002/adma.201604223. Epub 2017 Jan 6.

Authors

Guohua Xie¹, Jiajia Luo¹, Manli Huang¹, Tianheng Chen¹, Kailong Wu¹, Shaolong Gong¹, Chuluo Yang¹

Affiliation

¹ Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China.

PMID: 28060416
DOI: 10.1002/adma.201604223

Abstract

Thermally activated delayed fluorescence (TADF) polymers are designed and synthesized by grafting the TADF emitter to the side chain of the polycarbazole backbone. By employing these TADF polymers with large ratio of delayed fluorescence component and high photoluminescence quantum yield as the emitters, the solution-processed light-emitting diodes achieve a maximal external quantum efficiency of 16.1% at a luminance of around 100 cd m^-2 .

Keywords: organic light-emitting diodes; polymers; side-engineering strategy; thermally activated delayed fluorescence.