Dibenzothiophene derived hosts with CN substituted carbazole for blue thermally activated delayed fluorescent organic light-emitting diodes

Ji Han Kim; Si Hyun Han; Jun Yeob Lee

doi:10.1016/j.synthmet.2017.08.014

Dibenzothiophene derived hosts with CN substituted carbazole for blue thermally activated delayed fluorescent organic light-emitting diodes

Ji Han Kim
, Si Hyun Han
, Jun Yeob Lee

Department of Chemical Engineering

Sungkyunkwan University

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

8 Scopus citations

Abstract

In this work, dibenzothiophene type host materials modified with 9H-carbazole, 9H-carbazole-3-carbonitrile and 9-phenylcarbazole were synthesized for high quantum efficiency and elongated lifetime in blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes. Three host materials having one or two CN modified carbazole units were prepared for strengthened chemical bond as well as improved electron transport properties. The host materials designed using the carbazole and CN modified carbazole units built on the dibenzothiophene core showed low driving voltage, high quantum efficiency and elongated lifetime at the same time without any sacrifice of device performances in the blue TADF devices.

Original language	English
Pages (from-to)	152-158
Number of pages	7
Journal	Synthetic Metals
Volume	232
DOIs	https://doi.org/10.1016/j.synthmet.2017.08.014
State	Published - Oct 2017

Keywords

Bipolar host
Blue organic light-emitting diodes
High efficiency
Lifetime
Thermally activated delayed fluorescence

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10.1016/j.synthmet.2017.08.014

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title = "Dibenzothiophene derived hosts with CN substituted carbazole for blue thermally activated delayed fluorescent organic light-emitting diodes",

abstract = "In this work, dibenzothiophene type host materials modified with 9H-carbazole, 9H-carbazole-3-carbonitrile and 9-phenylcarbazole were synthesized for high quantum efficiency and elongated lifetime in blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes. Three host materials having one or two CN modified carbazole units were prepared for strengthened chemical bond as well as improved electron transport properties. The host materials designed using the carbazole and CN modified carbazole units built on the dibenzothiophene core showed low driving voltage, high quantum efficiency and elongated lifetime at the same time without any sacrifice of device performances in the blue TADF devices.",

keywords = "Bipolar host, Blue organic light-emitting diodes, High efficiency, Lifetime, Thermally activated delayed fluorescence",

author = "Kim, \{Ji Han\} and Han, \{Si Hyun\} and Lee, \{Jun Yeob\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = oct,

doi = "10.1016/j.synthmet.2017.08.014",

language = "English",

volume = "232",

pages = "152--158",

journal = "Synthetic Metals",

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T1 - Dibenzothiophene derived hosts with CN substituted carbazole for blue thermally activated delayed fluorescent organic light-emitting diodes

AU - Kim, Ji Han

AU - Han, Si Hyun

AU - Lee, Jun Yeob

PY - 2017/10

Y1 - 2017/10

N2 - In this work, dibenzothiophene type host materials modified with 9H-carbazole, 9H-carbazole-3-carbonitrile and 9-phenylcarbazole were synthesized for high quantum efficiency and elongated lifetime in blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes. Three host materials having one or two CN modified carbazole units were prepared for strengthened chemical bond as well as improved electron transport properties. The host materials designed using the carbazole and CN modified carbazole units built on the dibenzothiophene core showed low driving voltage, high quantum efficiency and elongated lifetime at the same time without any sacrifice of device performances in the blue TADF devices.

AB - In this work, dibenzothiophene type host materials modified with 9H-carbazole, 9H-carbazole-3-carbonitrile and 9-phenylcarbazole were synthesized for high quantum efficiency and elongated lifetime in blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes. Three host materials having one or two CN modified carbazole units were prepared for strengthened chemical bond as well as improved electron transport properties. The host materials designed using the carbazole and CN modified carbazole units built on the dibenzothiophene core showed low driving voltage, high quantum efficiency and elongated lifetime at the same time without any sacrifice of device performances in the blue TADF devices.

KW - Bipolar host

KW - Blue organic light-emitting diodes

KW - High efficiency

KW - Lifetime

KW - Thermally activated delayed fluorescence

UR - https://www.scopus.com/pages/publications/85028939928

U2 - 10.1016/j.synthmet.2017.08.014

DO - 10.1016/j.synthmet.2017.08.014

M3 - Article

AN - SCOPUS:85028939928

SN - 0379-6779

VL - 232

SP - 152

EP - 158

JO - Synthetic Metals

JF - Synthetic Metals

ER -

Dibenzothiophene derived hosts with CN substituted carbazole for blue thermally activated delayed fluorescent organic light-emitting diodes

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Keywords

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