Highly efficient red iridium(III) complexes based on phthalazine derivatives for organic light-emitting diodes

Qunbo Mei; Lingxia Wang; Bo Tian; Bihai Tong; Jiena Weng; Bin Zhang; Yuanzhi Jiang; Wei Huang

doi:10.1016/j.dyepig.2012.11.012

Highly efficient red iridium(III) complexes based on phthalazine derivatives for organic light-emitting diodes

Qunbo Mei, Lingxia Wang, Bo Tian, Bihai Tong, Jiena Weng, Bin Zhang, Yuanzhi Jiang, Wei Huang

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

31 Scopus citations

Abstract

Two novel bis-cyclometalated iridium(III) complexes, Ir(ECPC) ₂(pic) and Ir(TPC)₂(pic) (HECPC, 3-(4-(9H-carbazol-9-yl) phthalazin-1-yl)-9-ethyl-9H-carbazole; HTPC, 4-(4-(9H-carbazol-9-yl)phthalazin- 1-yl)-N,N-diphenylaniline, pic = 2-picolinic acid) were synthesized in moderate yield under mild synthetic conditions, and their electrical and photophysical properties were characterized with respect to their application as a phosphorescent emitter in polymer light-emitting diodes (PLEDs). The devices based on these complexes with the structure of ITO/PEDOT:PSS (40 nm)/70%PVK:30%PBD:x% iridium(III) complex (70 nm)/TPBI (30 nm)/Ba (1.5 nm)/Al (120 nm) were fabricated with highly external quantum efficiency. The device based on Ir(ECPC)₂(pic) exhibited a maximum external quantum efficiency of 16.3% and a luminance of 1484 cd/cm²; while the device based on Ir(TPC)₂(pic) showed a maximum external quantum efficiency of 11.9% and a Commission International de L'Eclairage (CIE) coordinates of (0.695,0.289). The results showed that the two new bis-cyclometalated iridium(III) complexes can be used as emitters and applied in saturated red phosphorescent organic light-emitting diodes (PHOLEDs).

Original language	English
Pages (from-to)	43-51
Number of pages	9
Journal	Dyes and Pigments
Volume	97
Issue number	1
DOIs	https://doi.org/10.1016/j.dyepig.2012.11.012
State	Published - Apr 2013
Externally published	Yes

Keywords

Carbazole
Electrophosphorescent materials
Iridium(III) complexes
Organic light-emitting diodes
Phthalazine
Triphenylamine

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10.1016/j.dyepig.2012.11.012

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@article{330687f35975487d99248c11d48dea31,

title = "Highly efficient red iridium(III) complexes based on phthalazine derivatives for organic light-emitting diodes",

abstract = "Two novel bis-cyclometalated iridium(III) complexes, Ir(ECPC) 2(pic) and Ir(TPC)2(pic) (HECPC, 3-(4-(9H-carbazol-9-yl) phthalazin-1-yl)-9-ethyl-9H-carbazole; HTPC, 4-(4-(9H-carbazol-9-yl)phthalazin- 1-yl)-N,N-diphenylaniline, pic = 2-picolinic acid) were synthesized in moderate yield under mild synthetic conditions, and their electrical and photophysical properties were characterized with respect to their application as a phosphorescent emitter in polymer light-emitting diodes (PLEDs). The devices based on these complexes with the structure of ITO/PEDOT:PSS (40 nm)/70%PVK:30%PBD:x% iridium(III) complex (70 nm)/TPBI (30 nm)/Ba (1.5 nm)/Al (120 nm) were fabricated with highly external quantum efficiency. The device based on Ir(ECPC)2(pic) exhibited a maximum external quantum efficiency of 16.3% and a luminance of 1484 cd/cm2; while the device based on Ir(TPC)2(pic) showed a maximum external quantum efficiency of 11.9% and a Commission International de L'Eclairage (CIE) coordinates of (0.695,0.289). The results showed that the two new bis-cyclometalated iridium(III) complexes can be used as emitters and applied in saturated red phosphorescent organic light-emitting diodes (PHOLEDs).",

keywords = "Carbazole, Electrophosphorescent materials, Iridium(III) complexes, Organic light-emitting diodes, Phthalazine, Triphenylamine",

author = "Qunbo Mei and Lingxia Wang and Bo Tian and Bihai Tong and Jiena Weng and Bin Zhang and Yuanzhi Jiang and Wei Huang",

year = "2013",

month = apr,

doi = "10.1016/j.dyepig.2012.11.012",

language = "英语",

volume = "97",

pages = "43--51",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Highly efficient red iridium(III) complexes based on phthalazine derivatives for organic light-emitting diodes

AU - Mei, Qunbo

AU - Wang, Lingxia

AU - Tian, Bo

AU - Tong, Bihai

AU - Weng, Jiena

AU - Zhang, Bin

AU - Jiang, Yuanzhi

AU - Huang, Wei

PY - 2013/4

Y1 - 2013/4

N2 - Two novel bis-cyclometalated iridium(III) complexes, Ir(ECPC) 2(pic) and Ir(TPC)2(pic) (HECPC, 3-(4-(9H-carbazol-9-yl) phthalazin-1-yl)-9-ethyl-9H-carbazole; HTPC, 4-(4-(9H-carbazol-9-yl)phthalazin- 1-yl)-N,N-diphenylaniline, pic = 2-picolinic acid) were synthesized in moderate yield under mild synthetic conditions, and their electrical and photophysical properties were characterized with respect to their application as a phosphorescent emitter in polymer light-emitting diodes (PLEDs). The devices based on these complexes with the structure of ITO/PEDOT:PSS (40 nm)/70%PVK:30%PBD:x% iridium(III) complex (70 nm)/TPBI (30 nm)/Ba (1.5 nm)/Al (120 nm) were fabricated with highly external quantum efficiency. The device based on Ir(ECPC)2(pic) exhibited a maximum external quantum efficiency of 16.3% and a luminance of 1484 cd/cm2; while the device based on Ir(TPC)2(pic) showed a maximum external quantum efficiency of 11.9% and a Commission International de L'Eclairage (CIE) coordinates of (0.695,0.289). The results showed that the two new bis-cyclometalated iridium(III) complexes can be used as emitters and applied in saturated red phosphorescent organic light-emitting diodes (PHOLEDs).

AB - Two novel bis-cyclometalated iridium(III) complexes, Ir(ECPC) 2(pic) and Ir(TPC)2(pic) (HECPC, 3-(4-(9H-carbazol-9-yl) phthalazin-1-yl)-9-ethyl-9H-carbazole; HTPC, 4-(4-(9H-carbazol-9-yl)phthalazin- 1-yl)-N,N-diphenylaniline, pic = 2-picolinic acid) were synthesized in moderate yield under mild synthetic conditions, and their electrical and photophysical properties were characterized with respect to their application as a phosphorescent emitter in polymer light-emitting diodes (PLEDs). The devices based on these complexes with the structure of ITO/PEDOT:PSS (40 nm)/70%PVK:30%PBD:x% iridium(III) complex (70 nm)/TPBI (30 nm)/Ba (1.5 nm)/Al (120 nm) were fabricated with highly external quantum efficiency. The device based on Ir(ECPC)2(pic) exhibited a maximum external quantum efficiency of 16.3% and a luminance of 1484 cd/cm2; while the device based on Ir(TPC)2(pic) showed a maximum external quantum efficiency of 11.9% and a Commission International de L'Eclairage (CIE) coordinates of (0.695,0.289). The results showed that the two new bis-cyclometalated iridium(III) complexes can be used as emitters and applied in saturated red phosphorescent organic light-emitting diodes (PHOLEDs).

KW - Carbazole

KW - Electrophosphorescent materials

KW - Iridium(III) complexes

KW - Organic light-emitting diodes

KW - Phthalazine

KW - Triphenylamine

UR - http://www.scopus.com/inward/record.url?scp=84871363666&partnerID=8YFLogxK

U2 - 10.1016/j.dyepig.2012.11.012

DO - 10.1016/j.dyepig.2012.11.012

M3 - 文章

AN - SCOPUS:84871363666

SN - 0143-7208

VL - 97

SP - 43

EP - 51

JO - Dyes and Pigments

JF - Dyes and Pigments

IS - 1

ER -

Highly efficient red iridium(III) complexes based on phthalazine derivatives for organic light-emitting diodes

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