Photoluminescence and electroluminescence of a new blue-emitting homoleptic iridium complex

Siewling Chew; Chun Sing Lee; Shuit-Tong Lee; Pengfei Wang; Jian He; Wen Li; Jie Pan; Xiaohong Zhang; Hoilun Kwong

doi:10.1063/1.2178468

Photoluminescence and electroluminescence of a new blue-emitting homoleptic iridium complex

Siewling Chew
, Chun Sing Lee
, Shuit-Tong Lee^*
, Pengfei Wang
, Jian He
, Wen Li
, Jie Pan
, Xiaohong Zhang
, Hoilun Kwong

^*Corresponding author for this work

Centre of Super-Diamond and Advanced Films

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

47 Citations (Scopus)

Abstract

A new electrophosphorescent material, iridium(III)tris(5-(2,4-difluoro- phenyl)-10,10- dimethyl-4-aza-tricycloundeca-2,4,6-triene), Ir (F2 -mppy) 3, has been synthesized and characterized. Ir (F2 -mppy) 3 shows strong blue emission peaking at 475 nm with a high phosphorescent quantum yield (Φ_PL) of 0.72 in degassed toluene. Electroluminescent devices with a structure of indium tin oxide (ITO)/NPB (40 nm)Ir (F2 -mppy) 3 (x): CBP (30 nm) /BCP (6 nm) Alq3 (20 nm)Mg:Ag (10:1) and 15% (10%) exhibit a maximum luminous power efficiency of 9.58 lmW (7.68 lmW), CIE coordinates (x=0.18,y=0.36) (x=0.17,y=0.29), and a maximum luminance of ∼9000 cd m2 at 12.5 V (∼6000 cd m2 at 11.5 V). © 2006 American Institute of Physics.

Original language	English
Article number	93510
Journal	Applied Physics Letters
Volume	88
Issue number	9
DOIs	https://doi.org/10.1063/1.2178468
Publication status	Published - 27 Feb 2006

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@article{d97159a5bcda47de8abdc6c587cf55fd,

title = "Photoluminescence and electroluminescence of a new blue-emitting homoleptic iridium complex",

abstract = "A new electrophosphorescent material, iridium(III)tris(5-(2,4-difluoro- phenyl)-10,10- dimethyl-4-aza-tricycloundeca-2,4,6-triene), Ir (F2 -mppy) 3, has been synthesized and characterized. Ir (F2 -mppy) 3 shows strong blue emission peaking at 475 nm with a high phosphorescent quantum yield (ΦPL) of 0.72 in degassed toluene. Electroluminescent devices with a structure of indium tin oxide (ITO)/NPB (40 nm)Ir (F2 -mppy) 3 (x): CBP (30 nm) /BCP (6 nm) Alq3 (20 nm)Mg:Ag (10:1) and 15\% (10\%) exhibit a maximum luminous power efficiency of 9.58 lmW (7.68 lmW), CIE coordinates (x=0.18,y=0.36) (x=0.17,y=0.29), and a maximum luminance of ∼9000 cd m2 at 12.5 V (∼6000 cd m2 at 11.5 V). {\textcopyright} 2006 American Institute of Physics.",

author = "Siewling Chew and Lee, \{Chun Sing\} and Shuit-Tong Lee and Pengfei Wang and Jian He and Wen Li and Jie Pan and Xiaohong Zhang and Hoilun Kwong",

year = "2006",

month = feb,

day = "27",

doi = "10.1063/1.2178468",

language = "English",

volume = "88",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Photoluminescence and electroluminescence of a new blue-emitting homoleptic iridium complex

AU - Chew, Siewling

AU - Lee, Chun Sing

AU - Lee, Shuit-Tong

AU - Wang, Pengfei

AU - He, Jian

AU - Li, Wen

AU - Pan, Jie

AU - Zhang, Xiaohong

AU - Kwong, Hoilun

PY - 2006/2/27

Y1 - 2006/2/27

N2 - A new electrophosphorescent material, iridium(III)tris(5-(2,4-difluoro- phenyl)-10,10- dimethyl-4-aza-tricycloundeca-2,4,6-triene), Ir (F2 -mppy) 3, has been synthesized and characterized. Ir (F2 -mppy) 3 shows strong blue emission peaking at 475 nm with a high phosphorescent quantum yield (ΦPL) of 0.72 in degassed toluene. Electroluminescent devices with a structure of indium tin oxide (ITO)/NPB (40 nm)Ir (F2 -mppy) 3 (x): CBP (30 nm) /BCP (6 nm) Alq3 (20 nm)Mg:Ag (10:1) and 15% (10%) exhibit a maximum luminous power efficiency of 9.58 lmW (7.68 lmW), CIE coordinates (x=0.18,y=0.36) (x=0.17,y=0.29), and a maximum luminance of ∼9000 cd m2 at 12.5 V (∼6000 cd m2 at 11.5 V). © 2006 American Institute of Physics.

AB - A new electrophosphorescent material, iridium(III)tris(5-(2,4-difluoro- phenyl)-10,10- dimethyl-4-aza-tricycloundeca-2,4,6-triene), Ir (F2 -mppy) 3, has been synthesized and characterized. Ir (F2 -mppy) 3 shows strong blue emission peaking at 475 nm with a high phosphorescent quantum yield (ΦPL) of 0.72 in degassed toluene. Electroluminescent devices with a structure of indium tin oxide (ITO)/NPB (40 nm)Ir (F2 -mppy) 3 (x): CBP (30 nm) /BCP (6 nm) Alq3 (20 nm)Mg:Ag (10:1) and 15% (10%) exhibit a maximum luminous power efficiency of 9.58 lmW (7.68 lmW), CIE coordinates (x=0.18,y=0.36) (x=0.17,y=0.29), and a maximum luminance of ∼9000 cd m2 at 12.5 V (∼6000 cd m2 at 11.5 V). © 2006 American Institute of Physics.

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U2 - 10.1063/1.2178468

DO - 10.1063/1.2178468

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 93510

ER -

Photoluminescence and electroluminescence of a new blue-emitting homoleptic iridium complex

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