Cluster Light-Emitting Diodes Containing Copper Iodine Cube with 100 % Exciton Utilization Using Host-Cluster Synergy

被引：20

作者：

Zhang, Nan ^{[1
]}

Li, Ying ^{[1
]}

Han, Sanyang ^{[3
]}

Wei, Ying ^{[1
]}

Hu, Huan ^{[1
]}

Huo, Ran ^{[1
]}

Duan, Chunbo ^{[1
]}

Zhang, Jing ^{[1
]}

Han, Chunmiao ^{[1
]}

Xie, Guohua ^{[2
]}

Xu, Hui ^{[1
]}

机构：

[1] Heilongjiang Univ, Sch Chem & Mat, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150080, Peoples R China

[2] Wuhan Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

[3] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge, England

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 27期

基金：

中国国家自然科学基金;

关键词：

Cluster; Host; Light-Emitting Diode; Phosphine Ligand; Reverse Intersystem Crossing; QUANTUM EFFICIENCY; BLUE; LUMINESCENCE;

D O I：

10.1002/anie.202305018

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Clusters combine the advantages of organic molecules and inorganic nanomaterials, which are promising alternatives for optoelectronic applications. Nonetheless, recently emerged cluster light-emitting diodes require further excited state optimization of cluster emitters, especially to reduce population of the cluster-centered triplet quenching state ((CC)-C-3). Here we report that redox-active ligands enhance reverse intersystem crossing (RISC) of Cu4I4 cluster for triplet-to-singlet conversion, and thermally activated delayed fluorescence (TADF) host can provide an external RISC channel. It indicates that the complementarity between TADF host and cluster in RISC transitions gives rise to 100 % triplet conversion efficiency and complete singlet exciton convergence, rendering 100-fold increased singlet radiation rate constant and tenfold decreased triplet non-radiation rate constant. We achieve a photoluminescence quantum yield of 99 % and a record external quantum efficiency of 29.4 %.

引用

页数：9

共 47 条

[21] DYNAMIC QUENCHING OF THE METAL-TO-LIGAND CHARGE-TRANSFER EXCITED-STATE OF CU4I4(PYRIDINE)4 - EXCIPLEX FORMATION AND SELF-QUENCHING [J].

KYLE, KR ;

FORD, PC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (13) :5005-5006

[22] Highly stretchable electroluminescent skin for optical signaling and tactile sensing [J].

Larson, C. ;

Peele, B. ;

Li, S. ;

Robinson, S. ;

Totaro, M. ;

Beccai, L. ;

Mazzolai, B. ;

Shepherd, R. .

SCIENCE, 2016, 351 (6277) :1071-1074

[23] Stable efficiency roll-off in blue phosphorescent organic light-emitting diodes by host layer engineering [J].

Lee, Jonghee ;

Lee, Jeong-IK ;

Lee, Jun Yeob ;

Chu, Hye Yong .

ORGANIC ELECTRONICS, 2009, 10 (08) :1529-1533

[24] Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent [J].

Lin, Kebin ;

Xing, Jun ;

Quan, Li Na ;

de Arquer, F. Pelayo Garcia ;

Gong, Xiwen ;

Lu, Jianxun ;

Xie, Liqiang ;

Zhao, Weijie ;

Zhang, Di ;

Yan, Chuanzhong ;

Li, Wenqiang ;

Liu, Xinyi ;

Lu, Yan ;

Kirman, Jeffrey ;

Sargent, Edward H. ;

Xiong, Qihua ;

Wei, Zhanhua .

NATURE, 2018, 562 (7726) :245-+

[25] High performance from extraordinarily thick organic light-emitting diodes [J].

Matsushima, Toshinori ;

Bencheikh, Fatima ;

Komino, Takeshi ;

Leyden, Matthew R. ;

Sandanayaka, Atula S. D. ;

Qin, Chuanjiang ;

Adachi, Chihaya .

NATURE, 2019, 572 (7770) :502-+

[26] Low-Voltage, Low-Power, Organic Light-Emitting Transistors for Active Matrix Displays [J].

McCarthy, M. A. ;

Liu, B. ;

Donoghue, E. P. ;

Kravchenko, I. ;

Kim, D. Y. ;

So, F. ;

Rinzler, A. G. .

SCIENCE, 2011, 332 (6029) :570-573

[27] Multi-colour organic light-emitting displays by solution processing [J].

Müller, CD ;

Falcou, A ;

Reckefuss, N ;

Rojahn, M ;

Wiederhirn, V ;

Rudati, P ;

Frohne, H ;

Nuyken, O ;

Becker, H ;

Meerholz, K .

NATURE, 2003, 421 (6925) :829-833

[28] High-efficiency organic light-emitting diodes with fluorescent emitters [J].

Nakanotani, Hajime ;

Higuchi, Takahiro ;

Furukawa, Taro ;

Masui, Kensuke ;

Morimoto, Kei ;

Numata, Masaki ;

Tanaka, Hiroyuki ;

Sagara, Yuta ;

Yasuda, Takuma ;

Adachi, Chihaya .

NATURE COMMUNICATIONS, 2014, 5

[29] Thin Film Metal Nanocluster Light-Emitting Devices [J].

Niesen, Bjoern ;

Rand, Barry P. .

ADVANCED MATERIALS, 2014, 26 (09) :1446-1449

[30] A Small Cationic Organo-Copper Cluster as Thermally Robust Highly Photo- and Electroluminescent Material [J].

Olaru, Marian ;

Rychagova, Elena ;

Ketkov, Sergey ;

Shynkarenko, Yevhen ;

Yakunin, Sergii ;

Kovalenko, Maksym, V ;

Yablonskiy, Artem ;

Andreev, Boris ;

Kleemiss, Florian ;

Beckmann, Jens ;

Vogt, Matthias .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2020, 142 (01) :373-381

← 1 2 3 4 5 →