Highly Robust Cu-I-TADF Emitters for Vacuum-Deposited OLEDs with Luminance up to 222 200 cd m(-2) and Device Lifetimes (LT90) up to 1300 hours at an Initial Luminance of 1000 cd m(-2)

Tang, Rui1,2; Xu, Shuo1; Lam, Tsz-Lung1,3; Cheng, Gang1,3,5; Du, Lili1,4; Wan, Qingyun1; Yang, Jun1,3; Hung, Faan-Fung1,3; Low, Kam-Hung1; Phillips, David Lee1; Che, Chi-Ming1,3,5

2022-06-01

10.1002/anie.202203982

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   影响因子和分区

1433-7851

1521-3773

A critical step in advancing the practical application of copper-based organic light-emitting diodes (OLEDs) is to bridge the large gap between device efficiency and operational stability at practical luminance. Described is a panel of air- and thermally stable two-coordinate Cu-I emitters featuring bulky pyrazine- (PzIPr) or pyridine-fused N-heterocyclic carbene (PyIPr*) and carbazole (Cz) ligands with enhanced amide-Cu-carbene bonding interactions. These Cu-I emitters display thermally activated delayed fluorescence (TADF) from the (LL)-L-1 ' CT(Cz -> PzIPr/PyIPr*) excited states across the blue to red regions with exceptional radiative rate constants of 1.1-2.2x10(6) s(-1). Vapour-deposited OLEDs based on these Cu-I emitters showed excellent external quantum efficiencies and luminance up to 23.6 % and 222 200 cd m(-2), respectively, alongside record device lifetimes (LT90) up to 1300 h at 1000 cd m(-2) under our laboratory conditions, highlighting the practicality of the Cu-I-TADF emitters.

Carbene-Metal-Amide (CMA) Copper(I) Emitter Device Lifetime Organic Light-Emitting Diode (OLED) Thermally-Activated Delayed Fluorescence (TADF)

SCI ; EI

英语

NI论文

其他

Guangdong Major Project of Basic and Applied Basic Research[2019B030302009] ; CAS-Croucher Funding Scheme for Joint Laboratories, Innovation and Technology Fund[PRP/071/19FX] ; Shunde Science and Technology Bureau[2030218000158] ; Science Technology and Innovation Commission of Shenzhen Municipality["JCYJ20180508162429786","JCYJ20200109150414471"]

Chemistry

Chemistry, Multidisciplinary

WOS:000814735400001

WILEY-V C H VERLAG GMBH

20222612267687

Amides ; Efficiency ; Fluorescence ; Ligands ; Luminance ; Organic light emitting diodes (OLED) ; Rate constants

Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Organic Compounds:804.1 ; Production Engineering:913.1

CHEMISTRY

Web of Science

1.Univ Hong Kong, Dept Chem, State Key Lab Synthet Chem, Pokfulam Rd, Hong Kong, Peoples R China
2.South Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
3.Hong Kong Quantum AI Lab Ltd, Pak Shek Kok, Units 909-915,Bldg 17W,17 Sci Pk West Ave, Hong Kong, Peoples R China
4.Jiangsu Univ, Sch Life Sci, Zhenjiang 212013, Jiangsu, Peoples R China
5.HKU Shenzhen Inst Res & Innovat, Shenzhen 518057, Guangdong, Peoples R China

Tang, Rui,Xu, Shuo,Lam, Tsz-Lung,et al. Highly Robust Cu-I-TADF Emitters for Vacuum-Deposited OLEDs with Luminance up to 222 200 cd m(-2) and Device Lifetimes (LT90) up to 1300 hours at an Initial Luminance of 1000 cd m(-2)[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2022,61.

Tang, Rui.,Xu, Shuo.,Lam, Tsz-Lung.,Cheng, Gang.,Du, Lili.,...&Che, Chi-Ming.(2022).Highly Robust Cu-I-TADF Emitters for Vacuum-Deposited OLEDs with Luminance up to 222 200 cd m(-2) and Device Lifetimes (LT90) up to 1300 hours at an Initial Luminance of 1000 cd m(-2).ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,61.

Tang, Rui,et al."Highly Robust Cu-I-TADF Emitters for Vacuum-Deposited OLEDs with Luminance up to 222 200 cd m(-2) and Device Lifetimes (LT90) up to 1300 hours at an Initial Luminance of 1000 cd m(-2)".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 61(2022).