TY - JOUR
T1 - Efficient deep red and NIR OLEDs based on Ir(III) complexes fabricated by evaporation and solution processing
AU - Zhang, Hongyang
AU - Sun, Yingjie
AU - Chen, Zhao
AU - Wang, Weigao
AU - Wang, Qiwei
AU - Chen, Shuming
AU - Xu, Yuqing
AU - Wong, Wai Yeung
N1 - Funding Information:
W.-Y.W. thanks the National Natural Science Foundation of China (51873176), Hong Kong Research Grants Council (PolyU153058/19P), the CAS-Croucher Funding Scheme for Joint Laboratories (ZH4A), Research Institute for Smart Energy (CDAQ) and the Endowed Professorship in Energy from Miss Clarea Au (847S) for the financial support.
Publisher Copyright:
© 2022
PY - 2023/1/1
Y1 - 2023/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85136151441&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2022.138632
DO - 10.1016/j.cej.2022.138632
M3 - Journal article
AN - SCOPUS:85136151441
SN - 1385-8947
VL - 451
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 138632
ER -