Simple-structure white organic light emitting diodes with high color temperature

Jung Soo Park; Jae Hyung Yu; Woo Sik Jeon; Young Hoon Son; Min Chul Suh; Jang Hyuk Kwon

doi:10.1016/j.cap.2011.04.027

Simple-structure white organic light emitting diodes with high color temperature

Jung Soo Park, Jae Hyung Yu, Woo Sik Jeon, Young Hoon Son, Min Chul Suh, Jang Hyuk Kwon

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

6 Citations (Scopus)

Abstract

We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato-N,C ^2'] picolinate and a red phosphorescent dopant of bis(2-phenylquinoline)(acetylacetonate)iridium(III) in the emissive layers is employed to make high color temperature devices. Very stable color variation under △0.02 until a 5000 cd/m ² brightness value is realized by efficient carrier control in a multi stacked emitting layer of blue/red/blue colors. Maximum current and power efficiencies of 23.8 cd/A and 22.9 lm/W in forward direction are obtained. With balanced emissions from the two emitters, the white light emission with very high correlated color temperature of 7308 K as well as CIE coordinates of (0.30, 0.33) is achieved.

Original language	English
Pages (from-to)	e42-e45
Journal	Current Applied Physics
Volume	12
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.cap.2011.04.027
Publication status	Published - Sept 2012

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. 2009-0074667 ). This work was supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy .

Keywords

Organic light emitting diodes
Phosphorescent
Pin structure
White emission

Access to Document

10.1016/j.cap.2011.04.027

Cite this

@article{e3b68aab318449dba9b19375e5cfcf49,

title = "Simple-structure white organic light emitting diodes with high color temperature",

abstract = "We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato-N,C 2'] picolinate and a red phosphorescent dopant of bis(2-phenylquinoline)(acetylacetonate)iridium(III) in the emissive layers is employed to make high color temperature devices. Very stable color variation under △0.02 until a 5000 cd/m 2 brightness value is realized by efficient carrier control in a multi stacked emitting layer of blue/red/blue colors. Maximum current and power efficiencies of 23.8 cd/A and 22.9 lm/W in forward direction are obtained. With balanced emissions from the two emitters, the white light emission with very high correlated color temperature of 7308 K as well as CIE coordinates of (0.30, 0.33) is achieved.",

keywords = "Organic light emitting diodes, Phosphorescent, Pin structure, White emission",

author = "Park, {Jung Soo} and Yu, {Jae Hyung} and Jeon, {Woo Sik} and Son, {Young Hoon} and Suh, {Min Chul} and Kwon, {Jang Hyuk}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. 2009-0074667 ). This work was supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy .",

year = "2012",

month = sep,

doi = "10.1016/j.cap.2011.04.027",

language = "English",

volume = "12",

pages = "e42--e45",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Simple-structure white organic light emitting diodes with high color temperature

AU - Park, Jung Soo

AU - Yu, Jae Hyung

AU - Jeon, Woo Sik

AU - Son, Young Hoon

AU - Suh, Min Chul

AU - Kwon, Jang Hyuk

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. 2009-0074667 ). This work was supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy .

PY - 2012/9

Y1 - 2012/9

N2 - We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato-N,C 2'] picolinate and a red phosphorescent dopant of bis(2-phenylquinoline)(acetylacetonate)iridium(III) in the emissive layers is employed to make high color temperature devices. Very stable color variation under △0.02 until a 5000 cd/m 2 brightness value is realized by efficient carrier control in a multi stacked emitting layer of blue/red/blue colors. Maximum current and power efficiencies of 23.8 cd/A and 22.9 lm/W in forward direction are obtained. With balanced emissions from the two emitters, the white light emission with very high correlated color temperature of 7308 K as well as CIE coordinates of (0.30, 0.33) is achieved.

AB - We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato-N,C 2'] picolinate and a red phosphorescent dopant of bis(2-phenylquinoline)(acetylacetonate)iridium(III) in the emissive layers is employed to make high color temperature devices. Very stable color variation under △0.02 until a 5000 cd/m 2 brightness value is realized by efficient carrier control in a multi stacked emitting layer of blue/red/blue colors. Maximum current and power efficiencies of 23.8 cd/A and 22.9 lm/W in forward direction are obtained. With balanced emissions from the two emitters, the white light emission with very high correlated color temperature of 7308 K as well as CIE coordinates of (0.30, 0.33) is achieved.

KW - Organic light emitting diodes

KW - Phosphorescent

KW - Pin structure

KW - White emission

UR - http://www.scopus.com/inward/record.url?scp=84862865372&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2011.04.027

DO - 10.1016/j.cap.2011.04.027

M3 - Article

AN - SCOPUS:84862865372

SN - 1567-1739

VL - 12

SP - e42-e45

JO - Current Applied Physics

JF - Current Applied Physics

IS - SUPPL. 1

ER -

Simple-structure white organic light emitting diodes with high color temperature

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this