Carbazolyldibenzofuran-type high-triplet-energy bipolar host material for blue phosphorescent organic light-emitting diodes

Sook Hee Jeong; Jun Yeob Lee

doi:10.1016/j.jlumin.2013.10.012

Carbazolyldibenzofuran-type high-triplet-energy bipolar host material for blue phosphorescent organic light-emitting diodes

Sook Hee Jeong
, Jun Yeob Lee

Dankook University

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

7 Scopus citations

Abstract

A high-triplet-energy material, 9′-(4,4′-(phenylphosphoryl) bis(dibenzo[b,d]furan-6,2-diyl))bis(9H-carbazole) (44DFCzPO), was synthesized as a bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). 44DFCzPO was synthesized by the selective lithiation of the 4-position of a carbazole-modified dibenzofuran, followed by phosphorylation. 44DFCzPO showed a high triplet energy of 2.91 eV for energy transfer to a blue phosphorescent dopant, and bipolar charge transport properties for balanced hole and electron density in the emitting layer. A high quantum efficiency of 16.7% at a low doping concentration of 3% was obtained using 44DFCzPO as the host in blue PHOLEDs.

Original language	English
Pages (from-to)	333-336
Number of pages	4
Journal	Journal of Luminescence
Volume	146
DOIs	https://doi.org/10.1016/j.jlumin.2013.10.012
State	Published - 2014
Externally published	Yes

Keywords

Bipolar host
Blue device
Dibenzofuran
High triplet energy

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10.1016/j.jlumin.2013.10.012

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@article{c8f06b7dcfac4998b94c5831343ac7a4,

title = "Carbazolyldibenzofuran-type high-triplet-energy bipolar host material for blue phosphorescent organic light-emitting diodes",

abstract = "A high-triplet-energy material, 9′-(4,4′-(phenylphosphoryl) bis(dibenzo[b,d]furan-6,2-diyl))bis(9H-carbazole) (44DFCzPO), was synthesized as a bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). 44DFCzPO was synthesized by the selective lithiation of the 4-position of a carbazole-modified dibenzofuran, followed by phosphorylation. 44DFCzPO showed a high triplet energy of 2.91 eV for energy transfer to a blue phosphorescent dopant, and bipolar charge transport properties for balanced hole and electron density in the emitting layer. A high quantum efficiency of 16.7\% at a low doping concentration of 3\% was obtained using 44DFCzPO as the host in blue PHOLEDs.",

keywords = "Bipolar host, Blue device, Dibenzofuran, High triplet energy",

author = "Jeong, \{Sook Hee\} and Lee, \{Jun Yeob\}",

year = "2014",

doi = "10.1016/j.jlumin.2013.10.012",

language = "English",

volume = "146",

pages = "333--336",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Carbazolyldibenzofuran-type high-triplet-energy bipolar host material for blue phosphorescent organic light-emitting diodes

AU - Jeong, Sook Hee

AU - Lee, Jun Yeob

PY - 2014

Y1 - 2014

N2 - A high-triplet-energy material, 9′-(4,4′-(phenylphosphoryl) bis(dibenzo[b,d]furan-6,2-diyl))bis(9H-carbazole) (44DFCzPO), was synthesized as a bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). 44DFCzPO was synthesized by the selective lithiation of the 4-position of a carbazole-modified dibenzofuran, followed by phosphorylation. 44DFCzPO showed a high triplet energy of 2.91 eV for energy transfer to a blue phosphorescent dopant, and bipolar charge transport properties for balanced hole and electron density in the emitting layer. A high quantum efficiency of 16.7% at a low doping concentration of 3% was obtained using 44DFCzPO as the host in blue PHOLEDs.

AB - A high-triplet-energy material, 9′-(4,4′-(phenylphosphoryl) bis(dibenzo[b,d]furan-6,2-diyl))bis(9H-carbazole) (44DFCzPO), was synthesized as a bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). 44DFCzPO was synthesized by the selective lithiation of the 4-position of a carbazole-modified dibenzofuran, followed by phosphorylation. 44DFCzPO showed a high triplet energy of 2.91 eV for energy transfer to a blue phosphorescent dopant, and bipolar charge transport properties for balanced hole and electron density in the emitting layer. A high quantum efficiency of 16.7% at a low doping concentration of 3% was obtained using 44DFCzPO as the host in blue PHOLEDs.

KW - Bipolar host

KW - Blue device

KW - Dibenzofuran

KW - High triplet energy

UR - https://www.scopus.com/pages/publications/84886688751

U2 - 10.1016/j.jlumin.2013.10.012

DO - 10.1016/j.jlumin.2013.10.012

M3 - Article

AN - SCOPUS:84886688751

SN - 0022-2313

VL - 146

SP - 333

EP - 336

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

Carbazolyldibenzofuran-type high-triplet-energy bipolar host material for blue phosphorescent organic light-emitting diodes

Abstract

Keywords

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