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

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

doi:10.1063/1.4978674

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% and operational lifetime up to 482 h at 1000 cd/cm2.

Authors:

Li, Guijie ^[1]; Klimes, Kody ^[2]; Fleetham, Tyler ^[2]; Zhu, Zhi-Qiang ^[2]; Li, Jian ^[2]

Arizona State Univ., Tempe, AZ (United States); Zhejiang Univ. of Technology, Hangzhou (China)
Arizona State Univ., Tempe, AZ (United States)

Publication Date:: Thu Mar 16 00:00:00 EDT 2017

Research Org.:: Arizona State Univ., Tempe, AZ (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1473867

Alternate Identifier(s):: OSTI ID: 1619779

Grant/Contract Number:: EE0007090; CHE-0748867; QJD1602017

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 110; Journal Issue: 11; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Li, Guijie, Klimes, Kody, Fleetham, Tyler, Zhu, Zhi-Qiang, and Li, Jian. Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex.  United States: N. p., 2017. 
Web.  doi:10.1063/1.4978674.

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                    Li, Guijie, Klimes, Kody, Fleetham, Tyler, Zhu, Zhi-Qiang, & Li, Jian. Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex.  United States.  https://doi.org/10.1063/1.4978674

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                    Li, Guijie, Klimes, Kody, Fleetham, Tyler, Zhu, Zhi-Qiang, and Li, Jian. Thu .  
"Stable and efficient sky-blue organic light emitting diodes employing a tetradentate platinum complex".  United States.  https://doi.org/10.1063/1.4978674.  https://www.osti.gov/servlets/purl/1473867.

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@article{osti_1473867,

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

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

  abstractNote = {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% and operational lifetime up to 482 h at 1000 cd/cm2.},

  doi          = {10.1063/1.4978674},

  journal      = {Applied Physics Letters},

  number       = 11,

  volume       = 110,

  place        = {United States},

  year         = {Thu Mar 16 00:00:00 EDT 2017},

  month        = {Thu Mar 16 00:00:00 EDT 2017}

}

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

Abstract

Citation Formats

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Harvesting All Electrogenerated Excitons through Metal Assisted Delayed Fluorescent Materials journal, March 2015

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High operational stability of electrophosphorescent devices
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Improved initial drop in operational lifetime of blue phosphorescent organic light emitting device fabricated under ultra high vacuum condition
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Promising operational stability of high-efficiency organic light-emitting diodes based on thermally activated delayed fluorescence
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Physical mechanism responsible for the stretched exponential decay behavior of aging organic light-emitting diodes
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Organic light-emitting diodes having exclusive near-infrared electrophosphorescence
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Highly efficient excimer-based white phosphorescent devices with improved power efficiency and color rendering index
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Recent advances of the emitters for high performance deep-blue organic light-emitting diodes
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Recent advances in white organic light-emitting diodes employing a single-emissive material
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Tetradentate Platinum Complexes for Efficient and Stable Excimer-Based White OLEDs
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Very high-efficiency green organic light-emitting devices based on electrophosphorescence
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Highly efficient blue thermally activated delayed fluorescence organic light emitting diodes based on tercarbazole donor and boron acceptor dyads
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Recent advances in phosphorescent platinum complexes for organic light-emitting diodes
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