Efficient Vacuum-Processed Light-Emitting Diodes Based on Carbene–Metal–Amides

Patrick J. Conaghan; S. Matthew Menke; Alexander S. Romanov; Saul T.E. Jones; Andrew J. Pearson; Emrys W. Evans; Manfred Bochmann; Neil C. Greenham; Dan Credgington

doi:10.1002/adma.201802285

Efficient Vacuum-Processed Light-Emitting Diodes Based on Carbene–Metal–Amides

Patrick J. Conaghan, S. Matthew Menke, Alexander S. Romanov, Saul T.E. Jones, Andrew J. Pearson, Emrys W. Evans, Manfred Bochmann, Neil C. Greenham, Dan Credgington

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83 Scopus citations

Abstract

Efficient vacuum-processed organic light-emitting diodes are fabricated using a carbene–metal–amide material, CMA1. An electroluminescence (EL) external quantum efficiency of 23% is achieved in a host-free emissive layer comprising pure CMA1. Furthermore external quantum efficiencies of up to 26.9% are achieved in host–guest emissive layers. EL spectra are found to depend on both the emissive-layer doping concentration and the choice of host material, enabling tuning of emission color from mid-green (Commission Internationale de l'Éclairage co-ordinates [0.24, 0.46]) to sky blue ([0.22 0.35]) without changing dopant. This tuning is achieved without compromising luminescence efficiency (>80%) while maintaining a short radiative lifetime of triplets (

Original language	English (US)
Pages (from-to)	1802285
Journal	Advanced Materials
Volume	30
Issue number	35
DOIs	https://doi.org/10.1002/adma.201802285
State	Published - Jul 9 2018
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2022-06-09
Acknowledgements: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC, grant no. EP/M005143/1) and the European Research Council (ERC). P.J.C. acknowledges EPSRC for Ph.D. studentship funding and A.J.P. also acknowledges support from EPSRC (grant no. EP/M024873/1). S.M.M. acknowledges support from the KAUST Competitive Research Grant Program. M.B. is an ERC Advanced Investigator Award holder (Grant No. 338944-GOCAT). D.C. acknowledges the support from the Royal Society (grant nos. UF130278 and RG140472). The authors thank the Diamond Light Source for access to the I07 beamline (session SI7223-1) and for the help during the GIWAXS experiments. The authors thank Mojtaba Abdi-Jalebi for PDS measurements and Edoardo Ruggeri for the help with GIWAXS measurements. The data underlying this publication is available through the following web link: https://doi.org/10.17863/CAM.24419.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "Efficient Vacuum-Processed Light-Emitting Diodes Based on Carbene–Metal–Amides",

abstract = "Efficient vacuum-processed organic light-emitting diodes are fabricated using a carbene–metal–amide material, CMA1. An electroluminescence (EL) external quantum efficiency of 23% is achieved in a host-free emissive layer comprising pure CMA1. Furthermore external quantum efficiencies of up to 26.9% are achieved in host–guest emissive layers. EL spectra are found to depend on both the emissive-layer doping concentration and the choice of host material, enabling tuning of emission color from mid-green (Commission Internationale de l'{\'E}clairage co-ordinates [0.24, 0.46]) to sky blue ([0.22 0.35]) without changing dopant. This tuning is achieved without compromising luminescence efficiency (>80%) while maintaining a short radiative lifetime of triplets (",

author = "Conaghan, {Patrick J.} and Menke, {S. Matthew} and Romanov, {Alexander S.} and Jones, {Saul T.E.} and Pearson, {Andrew J.} and Evans, {Emrys W.} and Manfred Bochmann and Greenham, {Neil C.} and Dan Credgington",

note = "KAUST Repository Item: Exported on 2022-06-09 Acknowledgements: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC, grant no. EP/M005143/1) and the European Research Council (ERC). P.J.C. acknowledges EPSRC for Ph.D. studentship funding and A.J.P. also acknowledges support from EPSRC (grant no. EP/M024873/1). S.M.M. acknowledges support from the KAUST Competitive Research Grant Program. M.B. is an ERC Advanced Investigator Award holder (Grant No. 338944-GOCAT). D.C. acknowledges the support from the Royal Society (grant nos. UF130278 and RG140472). The authors thank the Diamond Light Source for access to the I07 beamline (session SI7223-1) and for the help during the GIWAXS experiments. The authors thank Mojtaba Abdi-Jalebi for PDS measurements and Edoardo Ruggeri for the help with GIWAXS measurements. The data underlying this publication is available through the following web link: https://doi.org/10.17863/CAM.24419. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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AU - Conaghan, Patrick J.

AU - Menke, S. Matthew

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AU - Jones, Saul T.E.

AU - Pearson, Andrew J.

AU - Evans, Emrys W.

AU - Bochmann, Manfred

AU - Greenham, Neil C.

AU - Credgington, Dan

N1 - KAUST Repository Item: Exported on 2022-06-09 Acknowledgements: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC, grant no. EP/M005143/1) and the European Research Council (ERC). P.J.C. acknowledges EPSRC for Ph.D. studentship funding and A.J.P. also acknowledges support from EPSRC (grant no. EP/M024873/1). S.M.M. acknowledges support from the KAUST Competitive Research Grant Program. M.B. is an ERC Advanced Investigator Award holder (Grant No. 338944-GOCAT). D.C. acknowledges the support from the Royal Society (grant nos. UF130278 and RG140472). The authors thank the Diamond Light Source for access to the I07 beamline (session SI7223-1) and for the help during the GIWAXS experiments. The authors thank Mojtaba Abdi-Jalebi for PDS measurements and Edoardo Ruggeri for the help with GIWAXS measurements. The data underlying this publication is available through the following web link: https://doi.org/10.17863/CAM.24419. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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N2 - Efficient vacuum-processed organic light-emitting diodes are fabricated using a carbene–metal–amide material, CMA1. An electroluminescence (EL) external quantum efficiency of 23% is achieved in a host-free emissive layer comprising pure CMA1. Furthermore external quantum efficiencies of up to 26.9% are achieved in host–guest emissive layers. EL spectra are found to depend on both the emissive-layer doping concentration and the choice of host material, enabling tuning of emission color from mid-green (Commission Internationale de l'Éclairage co-ordinates [0.24, 0.46]) to sky blue ([0.22 0.35]) without changing dopant. This tuning is achieved without compromising luminescence efficiency (>80%) while maintaining a short radiative lifetime of triplets (

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JO - Advanced Materials

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IS - 35

ER -

Efficient Vacuum-Processed Light-Emitting Diodes Based on Carbene–Metal–Amides

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