High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes

Myungkwan Song; Jin Su Park; Chul Hyun Kim; Min Joung Im; Jang Soo Kim; Yeong Soon Gal; Jae Wook Kang; Jae Wook Lee; Sung Ho Jin

doi:10.1016/j.orgel.2009.07.012

High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes

Myungkwan Song
, Jin Su Park
, Chul Hyun Kim
, Min Joung Im
, Jang Soo Kim
, Yeong Soon Gal
, Jae Wook Kang
, Jae Wook Lee^*
, Sung Ho Jin

^*Corresponding author for this work

Department of Flexible and Printable Electronics

Center for Plastic Information System
Kyungil University
Korea Institute of Machine and Materials
Dong-A University

Research output: Contribution to journal › Journal article › peer-review

14 Scopus citations

Abstract

High efficiency, solution-processed, red emissive phosphorescent organic light-emitting diodes (PhOLEDs) have been developed. The PhOLEDs utilize bis[9-ethyl-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C²′]iridium picolinate (Et-Cvz-PhQ)₂Ir(pic) and bis[9-(2-(2-methoxyethoxy)ethyl)-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C²′]iridium picolinate (EO-Cvz-PhQ)₂Ir(pic) in a nonconjugated polymer host of PVK that contains the electron transport material of OXD-7 and the hole transport material TPD. The electroluminescence (EL) spectra of the PhOLEDs parallel those of (Et-Cvz-PhQ)₂Ir(pic) and (EO-Cvz-PhQ)₂Ir(pic) with maxima at 608 nm and a CIE (Commission International de l'Eclairage) coordinate of (0.62, 0.38). The red emitting PhOLEDs, based on ITO/PEDOT:PSS/PVK:OXD-7:TPD:Ir complex/cathode configuration, have a maximum external quantum efficiency of 10.6% and a luminance efficiency of 17.5 cd/A. The efficiency is significantly higher than those obtained using common solution-processed red emissive PhOLEDs.

Original language	English
Pages (from-to)	1412-1415
Number of pages	4
Journal	Organic Electronics
Volume	10
Issue number	7
DOIs	https://doi.org/10.1016/j.orgel.2009.07.012
State	Published - 2009.11

Keywords

Hole transporting material
PhOLEDs
Phosphorescent
Red
Solution-process

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10.1016/j.orgel.2009.07.012

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@article{9f2dae70a69f44259a8cfd31174791c6,

title = "High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes",

abstract = "High efficiency, solution-processed, red emissive phosphorescent organic light-emitting diodes (PhOLEDs) have been developed. The PhOLEDs utilize bis[9-ethyl-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (Et-Cvz-PhQ)2Ir(pic) and bis[9-(2-(2-methoxyethoxy)ethyl)-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (EO-Cvz-PhQ)2Ir(pic) in a nonconjugated polymer host of PVK that contains the electron transport material of OXD-7 and the hole transport material TPD. The electroluminescence (EL) spectra of the PhOLEDs parallel those of (Et-Cvz-PhQ)2Ir(pic) and (EO-Cvz-PhQ)2Ir(pic) with maxima at 608 nm and a CIE (Commission International de l'Eclairage) coordinate of (0.62, 0.38). The red emitting PhOLEDs, based on ITO/PEDOT:PSS/PVK:OXD-7:TPD:Ir complex/cathode configuration, have a maximum external quantum efficiency of 10.6\% and a luminance efficiency of 17.5 cd/A. The efficiency is significantly higher than those obtained using common solution-processed red emissive PhOLEDs.",

keywords = "Hole transporting material, PhOLEDs, Phosphorescent, Red, Solution-process",

author = "Myungkwan Song and Park, \{Jin Su\} and Kim, \{Chul Hyun\} and Im, \{Min Joung\} and Kim, \{Jang Soo\} and Gal, \{Yeong Soon\} and Kang, \{Jae Wook\} and Lee, \{Jae Wook\} and Jin, \{Sung Ho\}",

year = "2009",

month = nov,

doi = "10.1016/j.orgel.2009.07.012",

language = "English",

volume = "10",

pages = "1412--1415",

journal = "Organic Electronics",

issn = "1566-1199",

number = "7",

}

TY - JOUR

T1 - High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes

AU - Song, Myungkwan

AU - Park, Jin Su

AU - Kim, Chul Hyun

AU - Im, Min Joung

AU - Kim, Jang Soo

AU - Gal, Yeong Soon

AU - Kang, Jae Wook

AU - Lee, Jae Wook

AU - Jin, Sung Ho

PY - 2009/11

Y1 - 2009/11

N2 - High efficiency, solution-processed, red emissive phosphorescent organic light-emitting diodes (PhOLEDs) have been developed. The PhOLEDs utilize bis[9-ethyl-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (Et-Cvz-PhQ)2Ir(pic) and bis[9-(2-(2-methoxyethoxy)ethyl)-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (EO-Cvz-PhQ)2Ir(pic) in a nonconjugated polymer host of PVK that contains the electron transport material of OXD-7 and the hole transport material TPD. The electroluminescence (EL) spectra of the PhOLEDs parallel those of (Et-Cvz-PhQ)2Ir(pic) and (EO-Cvz-PhQ)2Ir(pic) with maxima at 608 nm and a CIE (Commission International de l'Eclairage) coordinate of (0.62, 0.38). The red emitting PhOLEDs, based on ITO/PEDOT:PSS/PVK:OXD-7:TPD:Ir complex/cathode configuration, have a maximum external quantum efficiency of 10.6% and a luminance efficiency of 17.5 cd/A. The efficiency is significantly higher than those obtained using common solution-processed red emissive PhOLEDs.

AB - High efficiency, solution-processed, red emissive phosphorescent organic light-emitting diodes (PhOLEDs) have been developed. The PhOLEDs utilize bis[9-ethyl-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (Et-Cvz-PhQ)2Ir(pic) and bis[9-(2-(2-methoxyethoxy)ethyl)-3-(4-phenylquinolin-2-yl)-9H-carbazolato-N,C2′]iridium picolinate (EO-Cvz-PhQ)2Ir(pic) in a nonconjugated polymer host of PVK that contains the electron transport material of OXD-7 and the hole transport material TPD. The electroluminescence (EL) spectra of the PhOLEDs parallel those of (Et-Cvz-PhQ)2Ir(pic) and (EO-Cvz-PhQ)2Ir(pic) with maxima at 608 nm and a CIE (Commission International de l'Eclairage) coordinate of (0.62, 0.38). The red emitting PhOLEDs, based on ITO/PEDOT:PSS/PVK:OXD-7:TPD:Ir complex/cathode configuration, have a maximum external quantum efficiency of 10.6% and a luminance efficiency of 17.5 cd/A. The efficiency is significantly higher than those obtained using common solution-processed red emissive PhOLEDs.

KW - Hole transporting material

KW - PhOLEDs

KW - Phosphorescent

KW - Red

KW - Solution-process

UR - https://www.scopus.com/pages/publications/69549084422

U2 - 10.1016/j.orgel.2009.07.012

DO - 10.1016/j.orgel.2009.07.012

M3 - Journal article

AN - SCOPUS:69549084422

SN - 1566-1199

VL - 10

SP - 1412

EP - 1415

JO - Organic Electronics

JF - Organic Electronics

IS - 7

ER -

High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes

Abstract

Keywords

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