Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes

Hsin-Hung Kuo; Yi-Ting Chen; Leon R. Devereux; Chung-Chih Wu; Mark A. Fox; Chu-Yun Kuei; Yun Chi; Gene-Hsiang Lee

doi:10.1002/adma.201702464

Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes

Hsin-Hung Kuo, Yi-Ting Chen, Leon R. Devereux, Chung-Chih Wu^*, Mark A. Fox^*, Chu-Yun Kuei, Yun Chi^*, Gene-Hsiang Lee

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

126 Citations (Scopus)

Abstract

Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE₍_x_,_y₎) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m⁻².

Original language	English
Article number	1702464
Journal	Advanced Materials
Volume	29
Issue number	33
Online published	21 Jun 2017
DOIs	https://doi.org/10.1002/adma.201702464
Publication status	Published - 6 Sept 2017
Externally published	Yes

Research Keywords

carbene
iridium
organic light-emitting diodes
phosphorescence
pyrazole
tridentate

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title = "Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes",

abstract = "Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE(x,y)) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m−2.",

keywords = "carbene, iridium, organic light-emitting diodes, phosphorescence, pyrazole, tridentate",

author = "Hsin-Hung Kuo and Yi-Ting Chen and Devereux, {Leon R.} and Chung-Chih Wu and Fox, {Mark A.} and Chu-Yun Kuei and Yun Chi and Gene-Hsiang Lee",

year = "2017",

month = sep,

day = "6",

doi = "10.1002/adma.201702464",

language = "English",

volume = "29",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "33",

}

TY - JOUR

T1 - Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes

AU - Kuo, Hsin-Hung

AU - Chen, Yi-Ting

AU - Devereux, Leon R.

AU - Wu, Chung-Chih

AU - Fox, Mark A.

AU - Kuei, Chu-Yun

AU - Chi, Yun

AU - Lee, Gene-Hsiang

PY - 2017/9/6

Y1 - 2017/9/6

N2 - Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE(x,y)) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m−2.

AB - Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE(x,y)) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m−2.

KW - carbene

KW - iridium

KW - organic light-emitting diodes

KW - phosphorescence

KW - pyrazole

KW - tridentate

UR - http://www.scopus.com/inward/record.url?scp=85021181026&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85021181026&origin=recordpage

U2 - 10.1002/adma.201702464

DO - 10.1002/adma.201702464

M3 - RGC 21 - Publication in refereed journal

SN - 0935-9648

VL - 29

JO - Advanced Materials

JF - Advanced Materials

IS - 33

M1 - 1702464

ER -

Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes

Abstract

Research Keywords

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