Highly efficient green phosphorescent organic light emitting diodes

Se Hyung Lee; Hyung Dol Park; Jae Wook Kang; Hyong Jun Kim; Jang Joo Kim

Highly efficient green phosphorescent organic light emitting diodes

Se Hyung Lee
, Hyung Dol Park
, Jae Wook Kang
, Hyong Jun Kim
, Jang Joo Kim^*

^*Corresponding author for this work

Department of Flexible and Printable Electronics

Seoul National University

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

2 Scopus citations

Abstract

We have developed green phosphorescent organic light-emitting diodes (OLEDs) with high quantum efficiency. Wide-energy-gap material, 1 ,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), with high triplet energy level was used as a hole transporting layer. Electrophosphorescent devices fabricated using TAPC as a hole-transporting layer and N,N'-dicarbazolyl-4,4'- biphenyl (CBP) doped with fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] as the emitting layer showed the maximum external quantum efficiency (η_ext) of 19.8 %, which is much higher than the devices adopting 4,4'-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl (NPB) (ηB _ext=14.6%) as a hole transporting layer.

Original language	English
Pages (from-to)	496-498
Number of pages	3
Journal	Proceedings of International Meeting on Information Display
Volume	8
State	Published - 2008
Event	8th International Meeting on Information Display - International Display Manufacturing Conference 2008 and Asia Display 2008, IMID/IDMC/ASIA DISPLAY 2008 - Ilsan, Korea, Republic of Duration: 2008.10.13 → 2008.10.17

Keywords

High efficiency
High triplet energy level
Phosphorescent OLED

Cite this

@article{00305fb08f454cda9ccd428454363214,

title = "Highly efficient green phosphorescent organic light emitting diodes",

abstract = "We have developed green phosphorescent organic light-emitting diodes (OLEDs) with high quantum efficiency. Wide-energy-gap material, 1 ,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), with high triplet energy level was used as a hole transporting layer. Electrophosphorescent devices fabricated using TAPC as a hole-transporting layer and N,N'-dicarbazolyl-4,4'- biphenyl (CBP) doped with fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] as the emitting layer showed the maximum external quantum efficiency (ηext) of 19.8 \%, which is much higher than the devices adopting 4,4'-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl (NPB) (ηB ext=14.6\%) as a hole transporting layer.",

keywords = "High efficiency, High triplet energy level, Phosphorescent OLED",

author = "Lee, \{Se Hyung\} and Park, \{Hyung Dol\} and Kang, \{Jae Wook\} and Kim, \{Hyong Jun\} and Kim, \{Jang Joo\}",

year = "2008",

language = "English",

volume = "8",

pages = "496--498",

journal = "Proceedings of International Meeting on Information Display",

issn = "1738-7558",

note = "8th International Meeting on Information Display - International Display Manufacturing Conference 2008 and Asia Display 2008, IMID/IDMC/ASIA DISPLAY 2008 ; Conference date: 13-10-2008 Through 17-10-2008",

}

TY - JOUR

T1 - Highly efficient green phosphorescent organic light emitting diodes

AU - Lee, Se Hyung

AU - Park, Hyung Dol

AU - Kang, Jae Wook

AU - Kim, Hyong Jun

AU - Kim, Jang Joo

PY - 2008

Y1 - 2008

N2 - We have developed green phosphorescent organic light-emitting diodes (OLEDs) with high quantum efficiency. Wide-energy-gap material, 1 ,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), with high triplet energy level was used as a hole transporting layer. Electrophosphorescent devices fabricated using TAPC as a hole-transporting layer and N,N'-dicarbazolyl-4,4'- biphenyl (CBP) doped with fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] as the emitting layer showed the maximum external quantum efficiency (ηext) of 19.8 %, which is much higher than the devices adopting 4,4'-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl (NPB) (ηB ext=14.6%) as a hole transporting layer.

AB - We have developed green phosphorescent organic light-emitting diodes (OLEDs) with high quantum efficiency. Wide-energy-gap material, 1 ,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), with high triplet energy level was used as a hole transporting layer. Electrophosphorescent devices fabricated using TAPC as a hole-transporting layer and N,N'-dicarbazolyl-4,4'- biphenyl (CBP) doped with fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] as the emitting layer showed the maximum external quantum efficiency (ηext) of 19.8 %, which is much higher than the devices adopting 4,4'-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl (NPB) (ηB ext=14.6%) as a hole transporting layer.

KW - High efficiency

KW - High triplet energy level

KW - Phosphorescent OLED

UR - https://www.scopus.com/pages/publications/65649097279

M3 - Conference article

AN - SCOPUS:65649097279

SN - 1738-7558

VL - 8

SP - 496

EP - 498

JO - Proceedings of International Meeting on Information Display

JF - Proceedings of International Meeting on Information Display

T2 - 8th International Meeting on Information Display - International Display Manufacturing Conference 2008 and Asia Display 2008, IMID/IDMC/ASIA DISPLAY 2008

Y2 - 13 October 2008 through 17 October 2008

ER -

Highly efficient green phosphorescent organic light emitting diodes

Abstract

Keywords

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