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

Materials Chemistry

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

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 (<1 μs).

Original language	English
Journal	Advanced Materials
DOIs	https://doi.org/10.1002/adma.201802285
Publication status	Published - 9 Aug 2018

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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 (<1 μs).",

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",

year = "2018",

month = aug,

day = "9",

doi = "10.1002/adma.201802285",

language = "English",

journal = "Advanced Materials",

issn = "0935-9648",

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T1 - Efficient Vacuum‐Processed Light‐Emitting Diodes Based on Carbene–Metal–Amides

AU - Conaghan, Patrick J.

AU - Menke, S. Matthew

AU - Romanov, Alexander S.

AU - Jones, Saul T. E.

AU - Pearson, Andrew J.

AU - Evans, Emrys W.

AU - Bochmann, Manfred

AU - Greenham, Neil C.

AU - Credgington, Dan

PY - 2018/8/9

Y1 - 2018/8/9

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 (<1 μs).

AB - 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 (<1 μs).

UR - https://doi.org/10.1002/adma.201802285

U2 - 10.1002/adma.201802285

DO - 10.1002/adma.201802285

M3 - Article

SN - 0935-9648

JO - Advanced Materials

JF - Advanced Materials

ER -

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

Abstract

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