Symposium S15: Metal Complexes for Optics: from fundamental to applications : no. S15.P21published_or_final_versio

Chan, MY

Tang, MC

Tsang, DPK

Wong, YC

Yam, VWW

HKU Scholars Hub

Title Bipolar Gold(III) Complexes for Solution-Processable OrganicLight-Emitting Devices with a Small Efficiency Roll-OffAuthor(s) Tang, MC; Tsang, DPK; Wong, YC; Chan, MY; Yam, VWWCitation42nd International Conference on Coordination Chemistry(ICCC-42), Brest, France, 3-8 July 2016. In Poster PresentationsAbstract Book, p. 551Issued Date 2016URL http://hdl.handle.net/10722/243908Rights This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.International Conference on Coordination Chemistry, 2016, Brest, France  Bipolar Gold(III) Complexes for Solution-Processable Organic Light-Emitting Devices with a Small Efficiency Roll-Off Man-Chung Tang, Mei-Yee Chan,* Vivian Wing-Wah Yam* Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong kobetang@hku.hk A new class of bipolar alkynylgold(III) complexes containing triphenylamine and benzimidazole moieties has been synthesized, characterized, and applied as phosphorescent dopants in the fabrication of solution-processable organic light-emitting devices (OLEDs). The incorporation of methyl groups in the central phenyl unit has been found to rigidify the molecule to reduce nonradiative decay, yielding a high photoluminescence quantum yield of up to 75% in spin-coated thin films. In addition, the realization of highly efficient solution-processable OLEDs with an extremely small external quantum efficiency (EQE) roll-off has been demonstrated. At practical brightness level of 1000 cd m–2, the optimized devices exhibited a high EQE of up to 10.0% and an extremely small roll-off of less than 1%.1     1. M.-C. Tang, D. P.-K. Tsang, Y.-C. Wong, M.-Y. Chan, V. W.-W. Yam, J. Am. Chem. Soc., 2014, 136, 17868. 551

Bipolar Gold(III) Complexes for Solution-Processable Organic Light-Emitting Devices with a Small Efficiency Roll-Off

http://hub.hku.hk/bitstream/10722/243908/1/Abstract.pdf

Bipolar Gold(III) Complexes for Solution-Processable Organic Light-Emitting Devices with a Small Efficiency Roll-Off

Abstract

Similar works

Full text

Available Versions

HKU Scholars Hub