CN-Modified Host Materials for Improved Efficiency and Lifetime in Blue Phosphorescent and Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes

Sung Yong Byeon; Ji Han Kim; Jun Yeob Lee

doi:10.1021/acsami.6b15502

CN-Modified Host Materials for Improved Efficiency and Lifetime in Blue Phosphorescent and Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes

Sung Yong Byeon
, Ji Han Kim
, Jun Yeob Lee

Department of Chemical Engineering

Sungkyunkwan University

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

65 Scopus citations

Abstract

CN-modified host materials, 9-(2-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (o-CzCN) and 9-(3-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (m-CzCN), which can improve the external quantum efficiency and lifetime of both blue phosphorescent and thermally activated delayed fluorescent (TADF) emitters were developed. A molecular design approach to stabilize the molecular structure and reduce the energy gap produced two high triplet energy host materials of o-CzCN and m-CzCN compatible with the phosphorescent and TADF emitters. The new host materials lowered operation voltage, increased quantum efficiency, and elongated lifetime of both phosphorescent and TADF devices.

Original language	English
Pages (from-to)	13339-13346
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	15
DOIs	https://doi.org/10.1021/acsami.6b15502
State	Published - 19 Apr 2017

Keywords

blue device
delayed fluorescence
efficiency
host
lifetime

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10.1021/acsami.6b15502

Cite this

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title = "CN-Modified Host Materials for Improved Efficiency and Lifetime in Blue Phosphorescent and Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes",

abstract = "CN-modified host materials, 9-(2-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (o-CzCN) and 9-(3-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (m-CzCN), which can improve the external quantum efficiency and lifetime of both blue phosphorescent and thermally activated delayed fluorescent (TADF) emitters were developed. A molecular design approach to stabilize the molecular structure and reduce the energy gap produced two high triplet energy host materials of o-CzCN and m-CzCN compatible with the phosphorescent and TADF emitters. The new host materials lowered operation voltage, increased quantum efficiency, and elongated lifetime of both phosphorescent and TADF devices.",

keywords = "blue device, delayed fluorescence, efficiency, host, lifetime",

author = "Byeon, \{Sung Yong\} and Kim, \{Ji Han\} and Lee, \{Jun Yeob\}",

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doi = "10.1021/acsami.6b15502",

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T1 - CN-Modified Host Materials for Improved Efficiency and Lifetime in Blue Phosphorescent and Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes

AU - Byeon, Sung Yong

AU - Kim, Ji Han

AU - Lee, Jun Yeob

PY - 2017/4/19

Y1 - 2017/4/19

N2 - CN-modified host materials, 9-(2-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (o-CzCN) and 9-(3-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (m-CzCN), which can improve the external quantum efficiency and lifetime of both blue phosphorescent and thermally activated delayed fluorescent (TADF) emitters were developed. A molecular design approach to stabilize the molecular structure and reduce the energy gap produced two high triplet energy host materials of o-CzCN and m-CzCN compatible with the phosphorescent and TADF emitters. The new host materials lowered operation voltage, increased quantum efficiency, and elongated lifetime of both phosphorescent and TADF devices.

AB - CN-modified host materials, 9-(2-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (o-CzCN) and 9-(3-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-carbazole-3-carbonitrile (m-CzCN), which can improve the external quantum efficiency and lifetime of both blue phosphorescent and thermally activated delayed fluorescent (TADF) emitters were developed. A molecular design approach to stabilize the molecular structure and reduce the energy gap produced two high triplet energy host materials of o-CzCN and m-CzCN compatible with the phosphorescent and TADF emitters. The new host materials lowered operation voltage, increased quantum efficiency, and elongated lifetime of both phosphorescent and TADF devices.

KW - blue device

KW - delayed fluorescence

KW - efficiency

KW - host

KW - lifetime

UR - https://www.scopus.com/pages/publications/85018478981

U2 - 10.1021/acsami.6b15502

DO - 10.1021/acsami.6b15502

M3 - Article

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SN - 1944-8244

VL - 9

SP - 13339

EP - 13346

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 15

ER -

CN-Modified Host Materials for Improved Efficiency and Lifetime in Blue Phosphorescent and Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes

Abstract

Keywords

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