High efficiency red organic light-emitting diodes using a phosphorescent iridium complex doped into a hole-blocking material

Hsin Hsuan Huang; Sheng Yuan Chu; Po Ching Kao; Cheng Hsien Yang; I. Wen Sun

doi:10.1016/j.tsf.2009.01.013

High efficiency red organic light-emitting diodes using a phosphorescent iridium complex doped into a hole-blocking material

Hsin Hsuan Huang, Sheng Yuan Chu, Po Ching Kao, Cheng Hsien Yang, I. Wen Sun

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

13 Citations (Scopus)

Abstract

We demonstrate high-efficiency red electrophosphorescent organic light-emitting devices (OLEDs) by doping a red-emitting iridium complex, Bis[7-methyl-1-p- tolyisoquinolinato-N,C²′]-iridium(III)(acetylacetonate) [(7-mtiq)₂Ir(acac)], into a hole-blocking material, 4-biphenyloxolato aluminum(III)bis(2-methyl-8- quinolinato)4-phenylphenolate. Both the phosphorescent characteristics of (7-mtiq)₂Ir(acac) and the electroluminescence mechanisms of OLEDs are investigated in this study. The Commission Internationale de L'Eclairage coordinates of (0.66, 0.34) is very close to the National Television System Committee standard red point (0.66, 0.33). With a dopant concentration of about 4%, a maximum luminance of 31317 cd/m² and a luminous efficiency of 21.6 cd/A have been obtained.

Original language	English
Pages (from-to)	3788-3791
Number of pages	4
Journal	Thin Solid Films
Volume	517
Issue number	13
DOIs	https://doi.org/10.1016/j.tsf.2009.01.013
Publication status	Published - 2009 May 1

All Science Journal Classification (ASJC) codes

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.2009.01.013

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title = "High efficiency red organic light-emitting diodes using a phosphorescent iridium complex doped into a hole-blocking material",

abstract = "We demonstrate high-efficiency red electrophosphorescent organic light-emitting devices (OLEDs) by doping a red-emitting iridium complex, Bis[7-methyl-1-p- tolyisoquinolinato-N,C2′]-iridium(III)(acetylacetonate) [(7-mtiq)2Ir(acac)], into a hole-blocking material, 4-biphenyloxolato aluminum(III)bis(2-methyl-8- quinolinato)4-phenylphenolate. Both the phosphorescent characteristics of (7-mtiq)2Ir(acac) and the electroluminescence mechanisms of OLEDs are investigated in this study. The Commission Internationale de L'Eclairage coordinates of (0.66, 0.34) is very close to the National Television System Committee standard red point (0.66, 0.33). With a dopant concentration of about 4%, a maximum luminance of 31317 cd/m2 and a luminous efficiency of 21.6 cd/A have been obtained.",

author = "Huang, {Hsin Hsuan} and Chu, {Sheng Yuan} and Kao, {Po Ching} and Yang, {Cheng Hsien} and Sun, {I. Wen}",

year = "2009",

month = may,

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doi = "10.1016/j.tsf.2009.01.013",

language = "English",

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pages = "3788--3791",

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T1 - High efficiency red organic light-emitting diodes using a phosphorescent iridium complex doped into a hole-blocking material

AU - Huang, Hsin Hsuan

AU - Chu, Sheng Yuan

AU - Kao, Po Ching

AU - Yang, Cheng Hsien

AU - Sun, I. Wen

PY - 2009/5/1

Y1 - 2009/5/1

N2 - We demonstrate high-efficiency red electrophosphorescent organic light-emitting devices (OLEDs) by doping a red-emitting iridium complex, Bis[7-methyl-1-p- tolyisoquinolinato-N,C2′]-iridium(III)(acetylacetonate) [(7-mtiq)2Ir(acac)], into a hole-blocking material, 4-biphenyloxolato aluminum(III)bis(2-methyl-8- quinolinato)4-phenylphenolate. Both the phosphorescent characteristics of (7-mtiq)2Ir(acac) and the electroluminescence mechanisms of OLEDs are investigated in this study. The Commission Internationale de L'Eclairage coordinates of (0.66, 0.34) is very close to the National Television System Committee standard red point (0.66, 0.33). With a dopant concentration of about 4%, a maximum luminance of 31317 cd/m2 and a luminous efficiency of 21.6 cd/A have been obtained.

AB - We demonstrate high-efficiency red electrophosphorescent organic light-emitting devices (OLEDs) by doping a red-emitting iridium complex, Bis[7-methyl-1-p- tolyisoquinolinato-N,C2′]-iridium(III)(acetylacetonate) [(7-mtiq)2Ir(acac)], into a hole-blocking material, 4-biphenyloxolato aluminum(III)bis(2-methyl-8- quinolinato)4-phenylphenolate. Both the phosphorescent characteristics of (7-mtiq)2Ir(acac) and the electroluminescence mechanisms of OLEDs are investigated in this study. The Commission Internationale de L'Eclairage coordinates of (0.66, 0.34) is very close to the National Television System Committee standard red point (0.66, 0.33). With a dopant concentration of about 4%, a maximum luminance of 31317 cd/m2 and a luminous efficiency of 21.6 cd/A have been obtained.

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U2 - 10.1016/j.tsf.2009.01.013

DO - 10.1016/j.tsf.2009.01.013

M3 - Article

AN - SCOPUS:64349094000

SN - 0040-6090

VL - 517

SP - 3788

EP - 3791

JO - Thin Solid Films

JF - Thin Solid Films

IS - 13

ER -

High efficiency red organic light-emitting diodes using a phosphorescent iridium complex doped into a hole-blocking material

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