Solution-processed high-performance organic light-emitting diodes containing a green-emitting MR-TADF dendrimer

Sen Wu; Dianming Sun; Eli Zysman-Colman

doi:10.1002/jsid.1204

Solution-processed high-performance organic light-emitting diodes containing a green-emitting MR-TADF dendrimer

Sen Wu, Dianming Sun^*, Eli Zysman-Colman^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

A multi-resonance thermally activated delayed fluorescence (MR-TADF) dendrimer emitter and a related reference MR-TADF compound were designed, synthesized, and characterized for use as narrowband emitters in solution-processed OLEDs. The 1 wt% doped films in PMMA film revealed that the compounds MR-D1 and MR-D2 showed narrowband green emission at λ_PL of 490 and 495 nm and with FWHM of 23 and 29 nm, respectively. The 50 wt% doped films in mCP still show narrowband green emission at λ_PL of 495 and 499 nm and with FWHM of 28 nm for MR-D1 and MR-D2, respectively, while conserving the small ΔE_ST of 0.14 and 0.13 eV, respectively. OLEDs containing an emissive layer consisting of 50 wt% MR-D1 and MR-D2 in mCP showed high EQE_max of 27.7% and 21.0%, respectively, and low efficiency roll-off of 19% and 30% at a luminance of 2000 cd/m⁻².

Original language	English
Pages (from-to)	450-456
Number of pages	7
Journal	Journal of the Society for Information Display
Volume	31
Issue number	6
Early online date	3 Apr 2023
DOIs	https://doi.org/10.1002/jsid.1204
Publication status	Published - 4 Jun 2023

Keywords

Multiresonant thermally activated delayed fluorescence
Solution-processed organic light-emitting diodes
Dendrimers

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10.1002/jsid.1204Licence: CC BY

Wu_2023_JSID_Solution‐processed_CC
Copyright © 2023 The Authors. Journal of the Society for Information Display published by Wiley Periodicals LLC on behalf of Society for Information Display. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Final published version, 1.82 MBLicence: CC BY

TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs
Zysman-Colman, E. (PI)
EPSRC
1/03/17 → 31/03/21
Project: Standard
CRITICAT Equipment Account: CRITICAT Equipment Fund
Smith, A. D. (PI)
EPSRC
21/07/14 → 30/06/15
Project: Standard

Solution-Processed High-Performance Organic Light-Emitting Diodes Containing A Green-Emitting MR-TADF Dendrimer (dataset)
Wu, S. (Creator), Sun, D. (Creator) & Zysman-Colman, E. (Creator), University of St Andrews, 12 Apr 2023
DOI: 10.17630/981f8a33-f4a4-467e-b998-e5b71ef1dd1b
Dataset

File

Cite this

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title = "Solution-processed high-performance organic light-emitting diodes containing a green-emitting MR-TADF dendrimer",

abstract = "A multi-resonance thermally activated delayed fluorescence (MR-TADF) dendrimer emitter and a related reference MR-TADF compound were designed, synthesized, and characterized for use as narrowband emitters in solution-processed OLEDs. The 1 wt% doped films in PMMA film revealed that the compounds MR-D1 and MR-D2 showed narrowband green emission at λPL of 490 and 495 nm and with FWHM of 23 and 29 nm, respectively. The 50 wt% doped films in mCP still show narrowband green emission at λPL of 495 and 499 nm and with FWHM of 28 nm for MR-D1 and MR-D2, respectively, while conserving the small ΔEST of 0.14 and 0.13 eV, respectively. OLEDs containing an emissive layer consisting of 50 wt% MR-D1 and MR-D2 in mCP showed high EQEmax of 27.7% and 21.0%, respectively, and low efficiency roll-off of 19% and 30% at a luminance of 2000 cd/m−2.",

keywords = "Multiresonant thermally activated delayed fluorescence, Solution-processed organic light-emitting diodes, Dendrimers",

author = "Sen Wu and Dianming Sun and Eli Zysman-Colman",

note = "Funding: S.W. thanks the China Scholarship Council (201906250199). D.S. acknowledges support from the Royal Academy of Engineering Enterprise Fellowship (EF2122-13106). E.Z.-C. acknowledge support from EPSRC (EP/L017008, EP/P010482/1).",

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AU - Wu, Sen

AU - Sun, Dianming

AU - Zysman-Colman, Eli

N1 - Funding: S.W. thanks the China Scholarship Council (201906250199). D.S. acknowledges support from the Royal Academy of Engineering Enterprise Fellowship (EF2122-13106). E.Z.-C. acknowledge support from EPSRC (EP/L017008, EP/P010482/1).

PY - 2023/6/4

Y1 - 2023/6/4

N2 - A multi-resonance thermally activated delayed fluorescence (MR-TADF) dendrimer emitter and a related reference MR-TADF compound were designed, synthesized, and characterized for use as narrowband emitters in solution-processed OLEDs. The 1 wt% doped films in PMMA film revealed that the compounds MR-D1 and MR-D2 showed narrowband green emission at λPL of 490 and 495 nm and with FWHM of 23 and 29 nm, respectively. The 50 wt% doped films in mCP still show narrowband green emission at λPL of 495 and 499 nm and with FWHM of 28 nm for MR-D1 and MR-D2, respectively, while conserving the small ΔEST of 0.14 and 0.13 eV, respectively. OLEDs containing an emissive layer consisting of 50 wt% MR-D1 and MR-D2 in mCP showed high EQEmax of 27.7% and 21.0%, respectively, and low efficiency roll-off of 19% and 30% at a luminance of 2000 cd/m−2.

AB - A multi-resonance thermally activated delayed fluorescence (MR-TADF) dendrimer emitter and a related reference MR-TADF compound were designed, synthesized, and characterized for use as narrowband emitters in solution-processed OLEDs. The 1 wt% doped films in PMMA film revealed that the compounds MR-D1 and MR-D2 showed narrowband green emission at λPL of 490 and 495 nm and with FWHM of 23 and 29 nm, respectively. The 50 wt% doped films in mCP still show narrowband green emission at λPL of 495 and 499 nm and with FWHM of 28 nm for MR-D1 and MR-D2, respectively, while conserving the small ΔEST of 0.14 and 0.13 eV, respectively. OLEDs containing an emissive layer consisting of 50 wt% MR-D1 and MR-D2 in mCP showed high EQEmax of 27.7% and 21.0%, respectively, and low efficiency roll-off of 19% and 30% at a luminance of 2000 cd/m−2.

KW - Multiresonant thermally activated delayed fluorescence

KW - Solution-processed organic light-emitting diodes

KW - Dendrimers

U2 - 10.1002/jsid.1204

DO - 10.1002/jsid.1204

M3 - Article

SN - 1938-3657

VL - 31

SP - 450

EP - 456

JO - Journal of the Society for Information Display

JF - Journal of the Society for Information Display

IS - 6

ER -

Solution-processed high-performance organic light-emitting diodes containing a green-emitting MR-TADF dendrimer

Abstract

Keywords

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Projects

TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs

CRITICAT Equipment Account: CRITICAT Equipment Fund

Datasets

Solution-Processed High-Performance Organic Light-Emitting Diodes Containing A Green-Emitting MR-TADF Dendrimer (dataset)

Cite this