Highly Efficient Green Solution Processable Organic Light-Emitting Diodes Based on a Phosphorescent κ<sup>3</sup>-(N^C^C)Gold(III)-Alkynyl Complex
Hélène Beucher, Sudhir Kumar, Estı́baliz Merino, Wei‐Hsu Hu, Gerrit Stemmler, Sergio Cuesta‐Galisteo, Jorge A. González, Jakub Jagielski, Chih‐Jen Shih, Cristina Nevado
Abstract
Gold(III) complexes are emerging as promising phosphorescent emitters for high-efficiency organic light-emitting diodes (OLEDs). However, despite recent advances in the coordination and organometallic chemistry of gold, only few compounds have been successful in high-performance devices. Here, we disclose the synthesis of a new phosphorescent κ3-(N^C^C)-aminophenylalkynyl-N,N′-bisfluorenyl-Au(III) complex which exhibits a current efficiency (ηCE) of 56.4 cd A–1 and an external quantum efficiency (ηext) of 16.2% in solution processable OLED devices. Our findings establish a new branch of gold(III)-alkyne compounds with remarkable electroluminescent performance for potential application in highly efficient OLEDs.