Electroluminescence property of highly soluble Ir(III) complex utilized by various hole blocking layers in polymer light emitting diodes

Young Wook Park; Young Min Kim; Jin Hwan Choi; Tae Hyun Park; Jin Wook Jeong; Min Ju Cho; Dong Hoon Choi; Byeong Kwon Ju

doi:10.1166/jnn.2010.2279

Electroluminescence property of highly soluble Ir(III) complex utilized by various hole blocking layers in polymer light emitting diodes

Young Wook Park, Young Min Kim, Jin Hwan Choi, Tae Hyun Park, Jin Wook Jeong, Min Ju Cho, Dong Hoon Choi, Byeong Kwon Ju

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

9 Citations (Scopus)

Abstract

The tris(2-phenylpyridine)iridium(III) [Ir(ppy) ₃] is a well known highly efficient green light-emitting phosphorescent guest dye dopant, but its relatively low solubility has been obstructing it to be used in polymer light-emitting diodes (PLEDs). According to our latest reports the solubility of Ir(ppy) ₃ complexes with the carbazole ligands, i.e., Ir(Czppy) ₃, was improved significantly in organic solvents, and was sufficient to be used in soluble process. This highly soluble Ir(Czppy) ₃ complex showed remarkably higher photoluminescence characteristics than conventional Ir(ppy) ₃, but it showed similar or comparably better electroluminescence (EL) characteristics, when the PLED was composed by widely used conventional hole blocking layer (HBL) and electron transport layer; 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline and tris(8-hydroxyquinoline) aluminum, respectively. In this report, we applied various HBLs to improve the EL characteristics of soluble Ir(III) complex based phosphorescent PLEDs. The PLEDs utilized by the wide band-gap 3-(4-biphenylyl)-4-phenyl5-tert-butylphenyl- 1,2,4-triazole demonstrated highly improved the current and the external quantum efficiency of 17.61 cd/A and 6.42%, respectively.

Original language	English
Pages (from-to)	3250-3253
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	10
Issue number	5
DOIs	https://doi.org/10.1166/jnn.2010.2279
Publication status	Published - 2010 May

Keywords

Highly soluble ir(III) complex
Hole blocking layer
Ir(Czppy)
Ir(ppy)
Phosphorescent

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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title = "Electroluminescence property of highly soluble Ir(III) complex utilized by various hole blocking layers in polymer light emitting diodes",

abstract = "The tris(2-phenylpyridine)iridium(III) [Ir(ppy) 3] is a well known highly efficient green light-emitting phosphorescent guest dye dopant, but its relatively low solubility has been obstructing it to be used in polymer light-emitting diodes (PLEDs). According to our latest reports the solubility of Ir(ppy) 3 complexes with the carbazole ligands, i.e., Ir(Czppy) 3, was improved significantly in organic solvents, and was sufficient to be used in soluble process. This highly soluble Ir(Czppy) 3 complex showed remarkably higher photoluminescence characteristics than conventional Ir(ppy) 3, but it showed similar or comparably better electroluminescence (EL) characteristics, when the PLED was composed by widely used conventional hole blocking layer (HBL) and electron transport layer; 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline and tris(8-hydroxyquinoline) aluminum, respectively. In this report, we applied various HBLs to improve the EL characteristics of soluble Ir(III) complex based phosphorescent PLEDs. The PLEDs utilized by the wide band-gap 3-(4-biphenylyl)-4-phenyl5-tert-butylphenyl- 1,2,4-triazole demonstrated highly improved the current and the external quantum efficiency of 17.61 cd/A and 6.42%, respectively.",

keywords = "Highly soluble ir(III) complex, Hole blocking layer, Ir(Czppy), Ir(ppy), Phosphorescent",

author = "Park, {Young Wook} and Kim, {Young Min} and Choi, {Jin Hwan} and Park, {Tae Hyun} and Jeong, {Jin Wook} and Cho, {Min Ju} and Choi, {Dong Hoon} and Ju, {Byeong Kwon}",

year = "2010",

month = may,

doi = "10.1166/jnn.2010.2279",

language = "English",

volume = "10",

pages = "3250--3253",

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issn = "1533-4880",

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AU - Park, Young Wook

AU - Kim, Young Min

AU - Choi, Jin Hwan

AU - Park, Tae Hyun

AU - Jeong, Jin Wook

AU - Cho, Min Ju

AU - Choi, Dong Hoon

AU - Ju, Byeong Kwon

PY - 2010/5

Y1 - 2010/5

N2 - The tris(2-phenylpyridine)iridium(III) [Ir(ppy) 3] is a well known highly efficient green light-emitting phosphorescent guest dye dopant, but its relatively low solubility has been obstructing it to be used in polymer light-emitting diodes (PLEDs). According to our latest reports the solubility of Ir(ppy) 3 complexes with the carbazole ligands, i.e., Ir(Czppy) 3, was improved significantly in organic solvents, and was sufficient to be used in soluble process. This highly soluble Ir(Czppy) 3 complex showed remarkably higher photoluminescence characteristics than conventional Ir(ppy) 3, but it showed similar or comparably better electroluminescence (EL) characteristics, when the PLED was composed by widely used conventional hole blocking layer (HBL) and electron transport layer; 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline and tris(8-hydroxyquinoline) aluminum, respectively. In this report, we applied various HBLs to improve the EL characteristics of soluble Ir(III) complex based phosphorescent PLEDs. The PLEDs utilized by the wide band-gap 3-(4-biphenylyl)-4-phenyl5-tert-butylphenyl- 1,2,4-triazole demonstrated highly improved the current and the external quantum efficiency of 17.61 cd/A and 6.42%, respectively.

AB - The tris(2-phenylpyridine)iridium(III) [Ir(ppy) 3] is a well known highly efficient green light-emitting phosphorescent guest dye dopant, but its relatively low solubility has been obstructing it to be used in polymer light-emitting diodes (PLEDs). According to our latest reports the solubility of Ir(ppy) 3 complexes with the carbazole ligands, i.e., Ir(Czppy) 3, was improved significantly in organic solvents, and was sufficient to be used in soluble process. This highly soluble Ir(Czppy) 3 complex showed remarkably higher photoluminescence characteristics than conventional Ir(ppy) 3, but it showed similar or comparably better electroluminescence (EL) characteristics, when the PLED was composed by widely used conventional hole blocking layer (HBL) and electron transport layer; 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline and tris(8-hydroxyquinoline) aluminum, respectively. In this report, we applied various HBLs to improve the EL characteristics of soluble Ir(III) complex based phosphorescent PLEDs. The PLEDs utilized by the wide band-gap 3-(4-biphenylyl)-4-phenyl5-tert-butylphenyl- 1,2,4-triazole demonstrated highly improved the current and the external quantum efficiency of 17.61 cd/A and 6.42%, respectively.

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KW - Hole blocking layer

KW - Ir(Czppy)

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Electroluminescence property of highly soluble Ir(III) complex utilized by various hole blocking layers in polymer light emitting diodes

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Keywords

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