Efficient deep red and NIR OLEDs based on Ir(III) complexes fabricated by evaporation and solution processing

Zhang，Hongyang1,2; Sun，Yingjie2; Chen，Zhao3; Wang，Weigao4; Wang，Qiwei5; Chen，Shuming4; Xu，Yuqing6; Wong，Wai Yeung1,2

2023

10.1016/j.cej.2022.138632

CHEMICAL ENGINEERING JOURNAL   Impact Factor & Quartile

1385-8947

1873-3212

Solution processing of organic light-emitting devices (OLEDs) becomes an attractive approach due to its low fabrication cost and accessibility to a broad range of materials. Near-infrared (NIR) OLEDs emerge as a practicable technological medium that can be widely used in phototherapy, optical imaging, remote communication, secured display and so on. We report here a couple of high-performance deep red OLEDs fabricated by evaporation processing and a series of NIR OLEDs fabricated by solution processing, in which the devices attain high maximum external quantum efficiencies (EQEs) of 12.68 %, 12.49 % and 3.80 % with the electroluminescence peaks at 673, 692 and 706 nm, respectively. The effects of functional substituents and p–π conjugation on the optoelectronic properties of these new Ir(III) phosphors have also been investigated. It can provide a new insight into developing highly efficient evaporation-processed and solution-processed OLEDs based on Ir(III) complexes with deep red and NIR emissions.

SCI ; EI

English

Others

National Natural Science Foundation of China[51873176] ; Hong Kong Research Grants Council[PolyU153058/19P] ; CAS-Croucher Funding Scheme for Joint Laboratories[ZH4A] ; Endowed Professorship in Energy[847S]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000861047500005

ELSEVIER SCIENCE SA

20223412607973

Electroluminescence ; Fabrication ; Infrared devices ; Iridium compounds ; Optical communication ; Organic light emitting diodes (OLED)

Electricity: Basic Concepts and Phenomena:701.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Optical Communication Systems:717.1 ; Light, Optics and Optical Devices:741 ; Chemical Operations:802.3

ENGINEERING

2-s2.0-85136151441

Scopus

1.The Hong Kong Polytechnic University Shenzhen Research Institute,Shenzhen,518057,China
2.Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy,The Hong Kong Polytechnic University,Hong Kong,Hung Hom,Hong Kong
3.School of Applied Physics and Materials,Wuyi University,Jiangmen,529020,China
4.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Department of Chemistry,Xihua University,Chengdu,610039,China
6.College of Physics and Optoelectronic Engineering,Ludong University,Yantai,264025,China

Zhang，Hongyang,Sun，Yingjie,Chen，Zhao,et al. Efficient deep red and NIR OLEDs based on Ir(III) complexes fabricated by evaporation and solution processing[J]. CHEMICAL ENGINEERING JOURNAL,2023,451.

Zhang，Hongyang.,Sun，Yingjie.,Chen，Zhao.,Wang，Weigao.,Wang，Qiwei.,...&Wong，Wai Yeung.(2023).Efficient deep red and NIR OLEDs based on Ir(III) complexes fabricated by evaporation and solution processing.CHEMICAL ENGINEERING JOURNAL,451.

Zhang，Hongyang,et al."Efficient deep red and NIR OLEDs based on Ir(III) complexes fabricated by evaporation and solution processing".CHEMICAL ENGINEERING JOURNAL 451(2023).