Europium β-diketonates for red-emitting electroluminescent devices

Channa R. De Silva; Fuyou Li; Chunhui Huang; Zhiping Zheng

doi:10.1016/j.tsf.2008.08.118

Europium β-diketonates for red-emitting electroluminescent devices

Channa R. De Silva, Fuyou Li, Chunhui Huang, Zhiping Zheng

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

34 Scopus citations

Abstract

Organic light-emitting devices were fabricated, wherein europium β-diketonates of the general formula Eu(X)₃(L) are the active emitting materials [L = 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) or 4,4′-dimethoxy-2,2′-bipyridine (dmbipy); X is the conjugate base of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HBTFA), thenoyltrifluoroacetone (HTTA), or 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (HHFAC)]. Red luminescence characteristic of Eu(III) at about 614 nm was observed in each of the five devices of the general device configuration ITO/NPB/Eu(X)₃(L):CBP/BCP/AlQ/LiF/Al [ITO, indium tin oxide; NPB, 4,4′-bis[n-(1-naphthyl)-N-phenyl-amino]biphenyl; CBP, 4,4′-N,N′-dicarbazolebiphenyl; BCP, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline; AlQ, tris(8-hydroxy)quinoline aluminum]. Except for Eu(BTFA)₃(TPTZ), each of the other four complexes gave practically meaningful device performance. In particular, the device utilizing Eu(TTA)₃(TPTZ) exhibited a maximum brightness of 781 cd/m² and the highest current efficiency reported so far of 4.76 cd/A at a typical computer screen brightness (100 cd/m²).

Original language	English (US)
Pages (from-to)	957-962
Number of pages	6
Journal	Thin Solid Films
Volume	517
Issue number	2
DOIs	https://doi.org/10.1016/j.tsf.2008.08.118
State	Published - Nov 28 2008
Externally published	Yes

Keywords

Electroluminescence
Europium complex
Organic light-emitting diodes
β-diketonates

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2008.08.118

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@article{5d478cf89ca64d7f9f7cead343a4734c,

title = "Europium β-diketonates for red-emitting electroluminescent devices",

abstract = "Organic light-emitting devices were fabricated, wherein europium β-diketonates of the general formula Eu(X)3(L) are the active emitting materials [L = 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) or 4,4′-dimethoxy-2,2′-bipyridine (dmbipy); X is the conjugate base of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HBTFA), thenoyltrifluoroacetone (HTTA), or 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (HHFAC)]. Red luminescence characteristic of Eu(III) at about 614 nm was observed in each of the five devices of the general device configuration ITO/NPB/Eu(X)3(L):CBP/BCP/AlQ/LiF/Al [ITO, indium tin oxide; NPB, 4,4′-bis[n-(1-naphthyl)-N-phenyl-amino]biphenyl; CBP, 4,4′-N,N′-dicarbazolebiphenyl; BCP, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline; AlQ, tris(8-hydroxy)quinoline aluminum]. Except for Eu(BTFA)3(TPTZ), each of the other four complexes gave practically meaningful device performance. In particular, the device utilizing Eu(TTA)3(TPTZ) exhibited a maximum brightness of 781 cd/m2 and the highest current efficiency reported so far of 4.76 cd/A at a typical computer screen brightness (100 cd/m2).",

keywords = "Electroluminescence, Europium complex, Organic light-emitting diodes, β-diketonates",

author = "{De Silva}, {Channa R.} and Fuyou Li and Chunhui Huang and Zhiping Zheng",

year = "2008",

month = nov,

day = "28",

doi = "10.1016/j.tsf.2008.08.118",

language = "English (US)",

volume = "517",

pages = "957--962",

journal = "Thin Solid Films",

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publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Europium β-diketonates for red-emitting electroluminescent devices

AU - De Silva, Channa R.

AU - Li, Fuyou

AU - Huang, Chunhui

AU - Zheng, Zhiping

PY - 2008/11/28

Y1 - 2008/11/28

N2 - Organic light-emitting devices were fabricated, wherein europium β-diketonates of the general formula Eu(X)3(L) are the active emitting materials [L = 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) or 4,4′-dimethoxy-2,2′-bipyridine (dmbipy); X is the conjugate base of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HBTFA), thenoyltrifluoroacetone (HTTA), or 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (HHFAC)]. Red luminescence characteristic of Eu(III) at about 614 nm was observed in each of the five devices of the general device configuration ITO/NPB/Eu(X)3(L):CBP/BCP/AlQ/LiF/Al [ITO, indium tin oxide; NPB, 4,4′-bis[n-(1-naphthyl)-N-phenyl-amino]biphenyl; CBP, 4,4′-N,N′-dicarbazolebiphenyl; BCP, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline; AlQ, tris(8-hydroxy)quinoline aluminum]. Except for Eu(BTFA)3(TPTZ), each of the other four complexes gave practically meaningful device performance. In particular, the device utilizing Eu(TTA)3(TPTZ) exhibited a maximum brightness of 781 cd/m2 and the highest current efficiency reported so far of 4.76 cd/A at a typical computer screen brightness (100 cd/m2).

AB - Organic light-emitting devices were fabricated, wherein europium β-diketonates of the general formula Eu(X)3(L) are the active emitting materials [L = 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) or 4,4′-dimethoxy-2,2′-bipyridine (dmbipy); X is the conjugate base of 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HBTFA), thenoyltrifluoroacetone (HTTA), or 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (HHFAC)]. Red luminescence characteristic of Eu(III) at about 614 nm was observed in each of the five devices of the general device configuration ITO/NPB/Eu(X)3(L):CBP/BCP/AlQ/LiF/Al [ITO, indium tin oxide; NPB, 4,4′-bis[n-(1-naphthyl)-N-phenyl-amino]biphenyl; CBP, 4,4′-N,N′-dicarbazolebiphenyl; BCP, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline; AlQ, tris(8-hydroxy)quinoline aluminum]. Except for Eu(BTFA)3(TPTZ), each of the other four complexes gave practically meaningful device performance. In particular, the device utilizing Eu(TTA)3(TPTZ) exhibited a maximum brightness of 781 cd/m2 and the highest current efficiency reported so far of 4.76 cd/A at a typical computer screen brightness (100 cd/m2).

KW - Electroluminescence

KW - Europium complex

KW - Organic light-emitting diodes

KW - β-diketonates

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U2 - 10.1016/j.tsf.2008.08.118

DO - 10.1016/j.tsf.2008.08.118

M3 - Article

AN - SCOPUS:55049092979

SN - 0040-6090

VL - 517

SP - 957

EP - 962

JO - Thin Solid Films

JF - Thin Solid Films

IS - 2

ER -

Europium β-diketonates for red-emitting electroluminescent devices

Abstract

Keywords

ASJC Scopus subject areas

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