Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex

Guijie Li; Kody Klimes; Tyler Fleetham; Zhi Qiang Zhu; Jian Li

doi:10.1063/1.4978674

Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex

Guijie Li, Kody Klimes, Tyler Fleetham, Zhi Qiang Zhu, Jian Li

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

36 Scopus citations

Abstract

A tetradentate Pt(II) complex platinum (II) [10-(9-(4-tert-butylpyridin-2-yl-κN)-9H-carbazol-2-yl-κC¹)-9,10-dihydro-9,9-dimethyl-3-(1H-pyrazol-1-yl-κN²)acridine-1-yl-κC¹] (PtN′1N-tBu) incorporating pyrazolyl-acridine as the lumophore was demonstrated to act as a stable and efficient sky-blue emitter. Phosphorescent organic light-emitting diode (OLED) employing PtN′1N-tBu without the electron blocking layer (EBL) achieved a high external quantum efficiency (EQE) of 15.9% and an estimated operational lifetime LT₇₀ of 635 h at an initial luminance of 1000 cd/cm². The device efficiency could be further improved by adding TrisPCz as EBL, reaching EQE of 17.3%

Original language	English (US)
Article number	113301
Journal	Applied Physics Letters
Volume	110
Issue number	11
DOIs	https://doi.org/10.1063/1.4978674
State	Published - Mar 13 2017

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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@article{28932f28d0de4a9cbe18d40d8625536d,

title = "Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex",

abstract = "A tetradentate Pt(II) complex platinum (II) [10-(9-(4-tert-butylpyridin-2-yl-κN)-9H-carbazol-2-yl-κC1)-9,10-dihydro-9,9-dimethyl-3-(1H-pyrazol-1-yl-κN2)acridine-1-yl-κC1] (PtN′1N-tBu) incorporating pyrazolyl-acridine as the lumophore was demonstrated to act as a stable and efficient sky-blue emitter. Phosphorescent organic light-emitting diode (OLED) employing PtN′1N-tBu without the electron blocking layer (EBL) achieved a high external quantum efficiency (EQE) of 15.9% and an estimated operational lifetime LT70 of 635 h at an initial luminance of 1000 cd/cm2. The device efficiency could be further improved by adding TrisPCz as EBL, reaching EQE of 17.3%",

author = "Guijie Li and Kody Klimes and Tyler Fleetham and Zhu, {Zhi Qiang} and Jian Li",

note = "Publisher Copyright: {\textcopyright} 2017 Author(s).",

year = "2017",

month = mar,

day = "13",

doi = "10.1063/1.4978674",

language = "English (US)",

volume = "110",

journal = "Applied Physics Letters",

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T1 - Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex

AU - Li, Guijie

AU - Klimes, Kody

AU - Fleetham, Tyler

AU - Zhu, Zhi Qiang

AU - Li, Jian

PY - 2017/3/13

Y1 - 2017/3/13

N2 - A tetradentate Pt(II) complex platinum (II) [10-(9-(4-tert-butylpyridin-2-yl-κN)-9H-carbazol-2-yl-κC1)-9,10-dihydro-9,9-dimethyl-3-(1H-pyrazol-1-yl-κN2)acridine-1-yl-κC1] (PtN′1N-tBu) incorporating pyrazolyl-acridine as the lumophore was demonstrated to act as a stable and efficient sky-blue emitter. Phosphorescent organic light-emitting diode (OLED) employing PtN′1N-tBu without the electron blocking layer (EBL) achieved a high external quantum efficiency (EQE) of 15.9% and an estimated operational lifetime LT70 of 635 h at an initial luminance of 1000 cd/cm2. The device efficiency could be further improved by adding TrisPCz as EBL, reaching EQE of 17.3%

AB - A tetradentate Pt(II) complex platinum (II) [10-(9-(4-tert-butylpyridin-2-yl-κN)-9H-carbazol-2-yl-κC1)-9,10-dihydro-9,9-dimethyl-3-(1H-pyrazol-1-yl-κN2)acridine-1-yl-κC1] (PtN′1N-tBu) incorporating pyrazolyl-acridine as the lumophore was demonstrated to act as a stable and efficient sky-blue emitter. Phosphorescent organic light-emitting diode (OLED) employing PtN′1N-tBu without the electron blocking layer (EBL) achieved a high external quantum efficiency (EQE) of 15.9% and an estimated operational lifetime LT70 of 635 h at an initial luminance of 1000 cd/cm2. The device efficiency could be further improved by adding TrisPCz as EBL, reaching EQE of 17.3%

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ER -

Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex

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