Efficient Triplet Exciton Fusion in Molecularly Doped Polymer Light-Emitting Diodes

被引：174

作者：

Di, Dawei ^{[1
]}

Yang, Le ^{[1
]}

Richter, Johannes M. ^{[1
]}

Meraldi, Lorenzo ^{[1
]}

Altamimi, Rashid M. ^{[2
]}

Alyamani, Ahmed Y. ^{[2
]}

Credgington, Dan ^{[1
]}

Musselman, Kevin P. ^{[3
]}

MacManus-Driscoll, Judith L. ^{[4
]}

Friend, Richard H. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

[2] King Abudulaziz City Sci & Technol, Riyadh 12371, Saudi Arabia

[3] Univ Waterloo, Mech & Mechatron Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

[4] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

PHOTON-UP-CONVERSION; ORGANIC ELECTROLUMINESCENT DEVICES; LOW-POWER; ANNIHILATION; SINGLET; STATE; PHOTOSENSITIZERS; PHOTOOXIDATION; NANOPARTICLES; FLUORESCENCE;

D O I：

10.1002/adma.201605987

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solution-processed polymer organic light-emitting diodes (OLEDs) doped with triplet-triplet annihilation (TTA)upconversion molecules, including 9,10-diphenylanthracene, perylene, rubrene and TIPS-pentacene, are reported. The fraction of triplet-generated electroluminescence approaches the theoretical limit. Record-high efficiencies in solution-processed OLEDs based on these materials are achieved. Unprecedented solid-state TTA-upconversion quantum yield of 23% (TTA-upconversion reaction efficiency of 70%) at electrical excitation well below one-sun equivalent is observed.

引用

页数：7

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