Doublet-emissive materials for organic light-emitting diodes: exciton formation and emission processes

被引：36

作者：

Gao, Shengxiang ^{[1
]}

Cui, Zhiyuan ^{[1
]}

Li, Feng ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

CHEMICAL SOCIETY REVIEWS | 2023年 / 52卷 / 09期

基金：

中国国家自然科学基金;

关键词：

COMPLEXES; LUMINESCENCE; FLUORESCENCE; ELECTROLUMINESCENCE; PHOSPHORESCENCE; PHOTOPHYSICS; MECHANISM; TRANSPORT; RADICALS; LIGANDS;

D O I：

10.1039/d2cs00772j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Doublet-emission is mainly discovered in stable radicals, lanthanide-metal complexes with an f(1) electron configuration and transition-metal complexes with a low-spin d(5) electron configuration, and has a distinct radiation mechanism from closed-shell luminescent molecules and thus technology opportunities. There exists an unpaired electron in the frontier molecular orbitals which enables efficient nanosecond-scale luminescence in these materials due to the spin-allowed transitions between doublet-spin states. In this review, we summarize recent advances in these materials and their application in organic light emitting diodes (OLEDs). The photoluminescence and electroluminescence mechanisms of different doublet-emissive molecular systems are discussed, in addition to the photophysical phenomena arising from doublet states. We also outline the current challenges faced by each molecular system, and the potential outlook on the future research trends in this field.

引用

页码：2875 / 2885

页数：11

共 82 条

[1] Understanding the luminescent nature of organic radicals for efficient doublet emitters and pure-red light-emitting diodes [J].

Abdurahman, Alim ;

Hele, Timothy J. H. ;

Gu, Qinying ;

Zhang, Jiangbin ;

Peng, Qiming ;

Zhang, Ming ;

Friend, Richard H. ;

Li, Feng ;

Evans, Emrys W. .

NATURE MATERIALS, 2020, 19 (11) :1224-+

[2] Why is the Energy of the Singly Occupied Orbital in Some Radicals below the Highest Occupied Orbital Energy? [J].

Abella, Laura ;

Crassous, Jeanne ;

Favereau, Ludovic ;

Autschbach, Jochen .

CHEMISTRY OF MATERIALS, 2021, 33 (10) :3678-3691

[3] Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].

Adachi, C ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051

[4] Homoleptic Tris-Diphosphine Re(I) and Re(II) Complexes and Re(II) Photophysics and Photochemistry [J].

Adams, Jeramie J. ;

Arulsamy, Navamoney ;

Sullivan, B. Patrick ;

Roddick, Dean M. ;

Ne-Uberger, Amelia ;

Schmehl, Russell H. .

INORGANIC CHEMISTRY, 2015, 54 (23) :11136-11149

[5] Efficient radical-based light-emitting diodes with doublet emission [J].

Ai, Xin ;

Evans, Emrys W. ;

Dong, Shengzhi ;

Gillett, Alexander J. ;

Guo, Haoqing ;

Chen, Yingxin ;

Hele, Timothy J. H. ;

Friend, Richard H. ;

Li, Feng .

NATURE, 2018, 563 (7732) :536-+

[6] A Stable Room-Temperature Luminescent Biphenylmethyl Radical [J].

Ai, Xin ;

Chen, Yingxin ;

Feng, Yuting ;

Li, Feng .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2018, 57 (11) :2869-2873

[7] Using lanthanide ions in molecular bioimaging [J].

Amoroso, Angelo J. ;

Pope, Simon J. A. .

CHEMICAL SOCIETY REVIEWS, 2015, 44 (14) :4723-4742

[8] Stable red nanoparticles loaded neutral luminescent radicals for fluorescence imaging [J].

Bai, Xuemei ;

Tan, Wenjia ;

Abdurahman, Alim ;

Li, Xinru ;

Li, Feng .

DYES AND PIGMENTS, 2022, 202

[9] Excitonic singlet-triplet ratio in a semiconducting organic thin film [J].

Baldo, MA ;

O'Brien, DF ;

Thompson, ME ;

Forrest, SR .

PHYSICAL REVIEW B, 1999, 60 (20) :14422-14428

[10] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

← 1 2 3 4 5 6 7 8 9 →