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

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Di_et_al-2017-Advanced_Materials.pdf (1.51 MB)

Date

2017-04-04

Authors

Di, Dawei
Yang, Le
Richter, Johannes M.
Meraldi, Lorenzo
Altamimi, Rashid M.
Alyamani, Ahmed Y.
Credgington, Dan
Musselman, Kevin P.
MacManus-Driscoll, Judith L.
Friend, Richard H.

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Wiley

Abstract

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.

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Keywords

Photon-Up-Conversion, Organic Electroluminescent Devices, Low-Power, Annihilation, Singlet, State, Photosensitizers, Photooxidation, Nanoparticles, Fluorescence

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http://dx.doi.org/10.1002/adma.201605987
 http://hdl.handle.net/10012/13250

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Waterloo Research
Mechanical and Mechatronics Engineering

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International