A thermally stable imidazole type ligand based Be complex as a triplet host material of green phosphorescent organic light emitting diodes

Chan Seok Oh; Jun Yeob Lee

doi:10.1016/j.orgel.2015.05.002

A thermally stable imidazole type ligand based Be complex as a triplet host material of green phosphorescent organic light emitting diodes

Chan Seok Oh, Jun Yeob Lee

Department of Chemical Engineering

Sungkyunkwan University

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

3 Scopus citations

Abstract

A 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenol ligand based Be complex, beryllium 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenolate (BePhIm), was investigated as a thermally stable host material of green phosphorescent organic light-emitting diodes (PHOLEDs). BePhIm was developed as a host material to have high triplet energy, thermal stability and balanced charge density. The triple energy of BePhIm was 2.73 eV and the glass transition temperature was 181°C. Maximum quantum efficiency of the BePhIm based green PHOLEDs was 25.9%, which is better than any other quantum efficiency reported in green PHOLED using Be complexes as the host material.

Original language	English
Pages (from-to)	315-319
Number of pages	5
Journal	Organic Electronics
Volume	24
DOIs	https://doi.org/10.1016/j.orgel.2015.05.002
State	Published - 29 Jun 2015

Keywords

Be complex
Green device
Quantum efficiency
Thermal stability
Triplet energy

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10.1016/j.orgel.2015.05.002

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@article{d7a932942c354762a319b5479ef3ceab,

title = "A thermally stable imidazole type ligand based Be complex as a triplet host material of green phosphorescent organic light emitting diodes",

abstract = "A 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenol ligand based Be complex, beryllium 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenolate (BePhIm), was investigated as a thermally stable host material of green phosphorescent organic light-emitting diodes (PHOLEDs). BePhIm was developed as a host material to have high triplet energy, thermal stability and balanced charge density. The triple energy of BePhIm was 2.73 eV and the glass transition temperature was 181°C. Maximum quantum efficiency of the BePhIm based green PHOLEDs was 25.9\%, which is better than any other quantum efficiency reported in green PHOLED using Be complexes as the host material.",

keywords = "Be complex, Green device, Quantum efficiency, Thermal stability, Triplet energy",

author = "Oh, \{Chan Seok\} and Lee, \{Jun Yeob\}",

year = "2015",

month = jun,

day = "29",

doi = "10.1016/j.orgel.2015.05.002",

language = "English",

volume = "24",

pages = "315--319",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - A thermally stable imidazole type ligand based Be complex as a triplet host material of green phosphorescent organic light emitting diodes

AU - Oh, Chan Seok

AU - Lee, Jun Yeob

PY - 2015/6/29

Y1 - 2015/6/29

N2 - A 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenol ligand based Be complex, beryllium 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenolate (BePhIm), was investigated as a thermally stable host material of green phosphorescent organic light-emitting diodes (PHOLEDs). BePhIm was developed as a host material to have high triplet energy, thermal stability and balanced charge density. The triple energy of BePhIm was 2.73 eV and the glass transition temperature was 181°C. Maximum quantum efficiency of the BePhIm based green PHOLEDs was 25.9%, which is better than any other quantum efficiency reported in green PHOLED using Be complexes as the host material.

AB - A 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenol ligand based Be complex, beryllium 2-(4,5-dimethyl-1-phenyl-imidazol-2-yl)phenolate (BePhIm), was investigated as a thermally stable host material of green phosphorescent organic light-emitting diodes (PHOLEDs). BePhIm was developed as a host material to have high triplet energy, thermal stability and balanced charge density. The triple energy of BePhIm was 2.73 eV and the glass transition temperature was 181°C. Maximum quantum efficiency of the BePhIm based green PHOLEDs was 25.9%, which is better than any other quantum efficiency reported in green PHOLED using Be complexes as the host material.

KW - Be complex

KW - Green device

KW - Quantum efficiency

KW - Thermal stability

KW - Triplet energy

UR - https://www.scopus.com/pages/publications/84933672706

U2 - 10.1016/j.orgel.2015.05.002

DO - 10.1016/j.orgel.2015.05.002

M3 - Article

AN - SCOPUS:84933672706

SN - 1566-1199

VL - 24

SP - 315

EP - 319

JO - Organic Electronics

JF - Organic Electronics

ER -

A thermally stable imidazole type ligand based Be complex as a triplet host material of green phosphorescent organic light emitting diodes

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Keywords

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