High-efficiency deep-blue-emitting organic light-emitting diodes based on iridium(III) carbene complexes

Amlan K. Pal; Simonas Krotkus; Mattia Fontani; Campbell F. R. Mackenzie; David B. Cordes; Alexandra M. Z. Slawin; Ifor D. W. Samuel; Eli Zysman-Colman

doi:10.1002/adma.201804231

High-efficiency deep-blue-emitting organic light-emitting diodes based on iridium(III) carbene complexes

Amlan K. Pal, Simonas Krotkus, Mattia Fontani, Campbell F. R. Mackenzie, David B. Cordes, Alexandra M. Z. Slawin, Ifor D. W. Samuel, Eli Zysman-Colman

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

156 Citations (Scopus)

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Abstract

High‐efficiency pure blue phosphorescent organic light‐emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'Éclairage (CIE) coordinates. Here two deep‐blue‐emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m⁻². They represent examples of the most efficient OLEDs surpassing the CIEy requirement of the National Television System Committee (NTSC) and the European Broadcasting Union (EBU). Emitter orientation contributes to the excellent device performance.

Original language	English
Article number	1804231
Pages (from-to)	1-10
Number of pages	10
Journal	Advanced Materials
Volume	30
Issue number	50
Early online date	15 Oct 2018
DOIs	https://doi.org/10.1002/adma.201804231
Publication status	Published - 13 Dec 2018

Keywords

Deep-blue emission
Iridium emitters
NHC ligands
Organic light-emitting diodes

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10.1002/adma.201804231

Pal_2018_Blue-IrNHC_AAM
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/adma.201804231
Accepted author manuscript, 3.58 MB

4 Finished

Photochemical Self-assembly: Photochemical Self-assembly of Light Harvesting Chromophores to Form Discrete Supramolecules
Pal, A. K. (PI)
The Leverhulme Trust
1/09/17 → 23/12/19
Project: Fellowship
TADF Emitters for OLEDs - Eli Zysman: TADF Emitters for OLEDs
Zysman-Colman, E. (PI)
EPSRC
1/03/17 → 31/03/21
Project: Standard
TADF Emitters for OLEDs - Ifor Samuel: TADF Emitters for OLEDs
Samuel, I. D. W. (PI)
EPSRC
1/03/17 → 28/02/20
Project: Standard

Eli Zysman-Colman
- eli.zysman-colmanst-andrews.acuk
- School of Chemistry - Director of Impact, Professor of Optoelectronic Materials
- Centre for Energy Ethics
- Organic Semiconductor Centre
- EaSTCHEM
Person: Academic

High Efficiency Deep Blue-Emitting Organic Light Emitting Diodes based on Iridium(III) Carbene Complexes (dataset 2)
Pal, A. K. (Creator), Krotkus, S. (Creator), Fontani, M. (Creator), Mackenzie, C. F. R. (Creator), Cordes, D. B. (Creator), Slawin, A. M. Z. (Creator) & Zysman-Colman, E. (Creator), Cambridge Crystallographic Data Centre, 2019
https://dx.doi.org/10.5517/ccdc.csd.cc205npk and one more link, https://dx.doi.org/10.5517/ccdc.csd.cc205nql (show fewer)
Dataset
High Efficiency Deep Blue-Emitting Organic Light Emitting Diodes based on Iridium(III) Carbene Complexes (dataset)
Pal, A. K. (Creator), Krotkus, S. (Creator), Fontani, M. (Creator), Mackenzie, C. F. R. (Creator), Cordes, D. B. (Creator), Slawin, A. M. Z. (Creator), Samuel, I. D. W. (Creator) & Zysman-Colman, E. (Creator), University of St Andrews, 22 Mar 2019
DOI: 10.17630/ad6f26d6-9839-4103-8dea-91846bcbad83
Dataset

File

Cite this

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title = "High-efficiency deep-blue-emitting organic light-emitting diodes based on iridium(III) carbene complexes",

abstract = "High‐efficiency pure blue phosphorescent organic light‐emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'{\'E}clairage (CIE) coordinates. Here two deep‐blue‐emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m−2. They represent examples of the most efficient OLEDs surpassing the CIEy requirement of the National Television System Committee (NTSC) and the European Broadcasting Union (EBU). Emitter orientation contributes to the excellent device performance.",

keywords = "Deep-blue emission, Iridium emitters, NHC ligands, Organic light-emitting diodes",

author = "Pal, {Amlan K.} and Simonas Krotkus and Mattia Fontani and Mackenzie, {Campbell F. R.} and Cordes, {David B.} and Slawin, {Alexandra M. Z.} and Samuel, {Ifor D. W.} and Eli Zysman-Colman",

note = "The authors are grateful to the University of St Andrews and EPSRC financial support (grants EP/P010482/1 and EP/M02105X/1). A.K.P thanks the Leverhulme Trust Early Career Fellowship (ECF-2017-326). I.D.W.S. acknowledges a Royal Society Wolfson Research Merit award.",

year = "2018",

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doi = "10.1002/adma.201804231",

language = "English",

volume = "30",

pages = "1--10",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "50",

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TY - JOUR

T1 - High-efficiency deep-blue-emitting organic light-emitting diodes based on iridium(III) carbene complexes

AU - Pal, Amlan K.

AU - Krotkus, Simonas

AU - Fontani, Mattia

AU - Mackenzie, Campbell F. R.

AU - Cordes, David B.

AU - Slawin, Alexandra M. Z.

AU - Samuel, Ifor D. W.

AU - Zysman-Colman, Eli

N1 - The authors are grateful to the University of St Andrews and EPSRC financial support (grants EP/P010482/1 and EP/M02105X/1). A.K.P thanks the Leverhulme Trust Early Career Fellowship (ECF-2017-326). I.D.W.S. acknowledges a Royal Society Wolfson Research Merit award.

PY - 2018/12/13

Y1 - 2018/12/13

N2 - High‐efficiency pure blue phosphorescent organic light‐emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'Éclairage (CIE) coordinates. Here two deep‐blue‐emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m−2. They represent examples of the most efficient OLEDs surpassing the CIEy requirement of the National Television System Committee (NTSC) and the European Broadcasting Union (EBU). Emitter orientation contributes to the excellent device performance.

AB - High‐efficiency pure blue phosphorescent organic light‐emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'Éclairage (CIE) coordinates. Here two deep‐blue‐emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m−2. They represent examples of the most efficient OLEDs surpassing the CIEy requirement of the National Television System Committee (NTSC) and the European Broadcasting Union (EBU). Emitter orientation contributes to the excellent device performance.

KW - Deep-blue emission

KW - Iridium emitters

KW - NHC ligands

KW - Organic light-emitting diodes

U2 - 10.1002/adma.201804231

DO - 10.1002/adma.201804231

M3 - Article

SN - 0935-9648

VL - 30

SP - 1

EP - 10

JO - Advanced Materials

JF - Advanced Materials

IS - 50

M1 - 1804231

ER -

High-efficiency deep-blue-emitting organic light-emitting diodes based on iridium(III) carbene complexes

Abstract

Keywords

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Projects

Photochemical Self-assembly: Photochemical Self-assembly of Light Harvesting Chromophores to Form Discrete Supramolecules

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

TADF Emitters for OLEDs - Ifor Samuel: TADF Emitters for OLEDs

Profiles

Eli Zysman-Colman

Datasets

High Efficiency Deep Blue-Emitting Organic Light Emitting Diodes based on Iridium(III) Carbene Complexes (dataset 2)

High Efficiency Deep Blue-Emitting Organic Light Emitting Diodes based on Iridium(III) Carbene Complexes (dataset)

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