Cyclometalated Iridium(III) Carbene Phosphors for Highly Efficient Blue Organic Light-Emitting Diodes

Zhao Chen; Liqi Wang; Sikai Su; Xingyu Zheng; Nianyong Zhu; Cheuk Lam Ho; Shuming Chen; Wai Yeung Wong

doi:10.1021/acsami.7b09172

Cyclometalated Iridium(III) Carbene Phosphors for Highly Efficient Blue Organic Light-Emitting Diodes

Zhao Chen, Liqi Wang, Sikai Su, Xingyu Zheng, Nianyong Zhu, Cheuk Lam Ho, Shuming Chen, Wai Yeung Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

71 Citations (Scopus)

Abstract

Five deep blue carbene-based iridium(III) phosphors were synthesized and characterized. Interestingly, one of them can be fabricated into deep blue, sky blue and white organic light-emitting diodes (OLEDs) through changing the host materials and exciton blocking layers. These deep and sky blue devices exhibit Commission Internationale de l′éclairage (CIE) coordinates of (0.145, 0.186) and (0.152, 0.277) with external quantum efficiency (EQE) of 15.2% and 9.6%, respectively. The EQE of the deep blue device can be further improved up to 19.0% by choosing a host with suitable energy level of its lowest unoccupied molecular orbital (LUMO).

Original language	English
Pages (from-to)	40497-40502
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	46
DOIs	https://doi.org/10.1021/acsami.7b09172
Publication status	Published - 22 Nov 2017

Keywords

blue phosphor
carbene
iridium
organic light-emitting diode
single-doped OLED

ASJC Scopus subject areas

Materials Science(all)

More information

10.1021/acsami.7b09172

Cite this

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title = "Cyclometalated Iridium(III) Carbene Phosphors for Highly Efficient Blue Organic Light-Emitting Diodes",

abstract = "Five deep blue carbene-based iridium(III) phosphors were synthesized and characterized. Interestingly, one of them can be fabricated into deep blue, sky blue and white organic light-emitting diodes (OLEDs) through changing the host materials and exciton blocking layers. These deep and sky blue devices exhibit Commission Internationale de l′{\'e}clairage (CIE) coordinates of (0.145, 0.186) and (0.152, 0.277) with external quantum efficiency (EQE) of 15.2% and 9.6%, respectively. The EQE of the deep blue device can be further improved up to 19.0% by choosing a host with suitable energy level of its lowest unoccupied molecular orbital (LUMO).",

keywords = "blue phosphor, carbene, iridium, organic light-emitting diode, single-doped OLED",

author = "Zhao Chen and Liqi Wang and Sikai Su and Xingyu Zheng and Nianyong Zhu and Ho, {Cheuk Lam} and Shuming Chen and Wong, {Wai Yeung}",

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AU - Chen, Zhao

AU - Wang, Liqi

AU - Su, Sikai

AU - Zheng, Xingyu

AU - Zhu, Nianyong

AU - Ho, Cheuk Lam

AU - Chen, Shuming

AU - Wong, Wai Yeung

PY - 2017/11/22

Y1 - 2017/11/22

N2 - Five deep blue carbene-based iridium(III) phosphors were synthesized and characterized. Interestingly, one of them can be fabricated into deep blue, sky blue and white organic light-emitting diodes (OLEDs) through changing the host materials and exciton blocking layers. These deep and sky blue devices exhibit Commission Internationale de l′éclairage (CIE) coordinates of (0.145, 0.186) and (0.152, 0.277) with external quantum efficiency (EQE) of 15.2% and 9.6%, respectively. The EQE of the deep blue device can be further improved up to 19.0% by choosing a host with suitable energy level of its lowest unoccupied molecular orbital (LUMO).

AB - Five deep blue carbene-based iridium(III) phosphors were synthesized and characterized. Interestingly, one of them can be fabricated into deep blue, sky blue and white organic light-emitting diodes (OLEDs) through changing the host materials and exciton blocking layers. These deep and sky blue devices exhibit Commission Internationale de l′éclairage (CIE) coordinates of (0.145, 0.186) and (0.152, 0.277) with external quantum efficiency (EQE) of 15.2% and 9.6%, respectively. The EQE of the deep blue device can be further improved up to 19.0% by choosing a host with suitable energy level of its lowest unoccupied molecular orbital (LUMO).

KW - blue phosphor

KW - carbene

KW - iridium

KW - organic light-emitting diode

KW - single-doped OLED

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U2 - 10.1021/acsami.7b09172

DO - 10.1021/acsami.7b09172

M3 - Journal article

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EP - 40502

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

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ER -

Cyclometalated Iridium(III) Carbene Phosphors for Highly Efficient Blue Organic Light-Emitting Diodes

Abstract

Keywords

ASJC Scopus subject areas

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