A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

Seung Geon Yoo; Sang Kyu Jeon; Seok Ho Hwang; Jun Yeob Lee

doi:10.1016/j.jiec.2015.07.020

A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

Seung Geon Yoo
, Sang Kyu Jeon
, Seok Ho Hwang
, Jun Yeob Lee

Department of Chemical Engineering

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

32 Scopus citations

Abstract

A strong hole transport type host material derived from bicarbazole and ditolylamine, 4,4'-(9H,9'H-[2,3'-bicarbazole]-9,9'-diyl)bis(N,N-di-p-tolylaniline) (BCTA), was synthesized as the host material of blue emitting tris[1-(2,4-diisopropyldibenzo[b,d]furan-3-yl)-2-phenylimidazole] (Ir(dbi)₃) triplet emitter. The strong hole transport character of BCTA compensated hole trapping effect of Ir(dbi)₃ and optimized charge balance in the emitting layer, delivering 17.8% external quantum efficiency in the blue phosphorescent organic light-emitting diodes.

Original language	English
Pages (from-to)	72-76
Number of pages	5
Journal	Journal of Industrial and Engineering Chemistry
Volume	32
DOIs	https://doi.org/10.1016/j.jiec.2015.07.020
State	Published - 25 Dec 2015

Keywords

Bicarbazole
High efficiency
High triplet energy
Hole transport
Triplet host

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10.1016/j.jiec.2015.07.020

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title = "A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes",

abstract = "A strong hole transport type host material derived from bicarbazole and ditolylamine, 4,4'-(9H,9'H-[2,3'-bicarbazole]-9,9'-diyl)bis(N,N-di-p-tolylaniline) (BCTA), was synthesized as the host material of blue emitting tris[1-(2,4-diisopropyldibenzo[b,d]furan-3-yl)-2-phenylimidazole] (Ir(dbi)3) triplet emitter. The strong hole transport character of BCTA compensated hole trapping effect of Ir(dbi)3 and optimized charge balance in the emitting layer, delivering 17.8\% external quantum efficiency in the blue phosphorescent organic light-emitting diodes.",

keywords = "Bicarbazole, High efficiency, High triplet energy, Hole transport, Triplet host",

author = "Yoo, \{Seung Geon\} and Jeon, \{Sang Kyu\} and Hwang, \{Seok Ho\} and Lee, \{Jun Yeob\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Korean Society of Industrial and Engineering Chemistry.",

year = "2015",

month = dec,

day = "25",

doi = "10.1016/j.jiec.2015.07.020",

language = "English",

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pages = "72--76",

journal = "Journal of Industrial and Engineering Chemistry",

issn = "1226-086X",

publisher = "Korean Society of Industrial Engineering Chemistry",

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T1 - A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

AU - Yoo, Seung Geon

AU - Jeon, Sang Kyu

AU - Hwang, Seok Ho

AU - Lee, Jun Yeob

PY - 2015/12/25

Y1 - 2015/12/25

N2 - A strong hole transport type host material derived from bicarbazole and ditolylamine, 4,4'-(9H,9'H-[2,3'-bicarbazole]-9,9'-diyl)bis(N,N-di-p-tolylaniline) (BCTA), was synthesized as the host material of blue emitting tris[1-(2,4-diisopropyldibenzo[b,d]furan-3-yl)-2-phenylimidazole] (Ir(dbi)3) triplet emitter. The strong hole transport character of BCTA compensated hole trapping effect of Ir(dbi)3 and optimized charge balance in the emitting layer, delivering 17.8% external quantum efficiency in the blue phosphorescent organic light-emitting diodes.

AB - A strong hole transport type host material derived from bicarbazole and ditolylamine, 4,4'-(9H,9'H-[2,3'-bicarbazole]-9,9'-diyl)bis(N,N-di-p-tolylaniline) (BCTA), was synthesized as the host material of blue emitting tris[1-(2,4-diisopropyldibenzo[b,d]furan-3-yl)-2-phenylimidazole] (Ir(dbi)3) triplet emitter. The strong hole transport character of BCTA compensated hole trapping effect of Ir(dbi)3 and optimized charge balance in the emitting layer, delivering 17.8% external quantum efficiency in the blue phosphorescent organic light-emitting diodes.

KW - Bicarbazole

KW - High efficiency

KW - High triplet energy

KW - Hole transport

KW - Triplet host

UR - https://www.scopus.com/pages/publications/84948717313

U2 - 10.1016/j.jiec.2015.07.020

DO - 10.1016/j.jiec.2015.07.020

M3 - Article

AN - SCOPUS:84948717313

SN - 1226-086X

VL - 32

SP - 72

EP - 76

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

Abstract

Keywords

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