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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-κC 1)-9,10-dihydro-9,9-dimethyl-3-(1H-pyrazol-1-yl-κN 2)acridine-1-yl-κC 1] (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:
 [1];  [2];  [2];  [2];  [2]
  1. Arizona State Univ., Tempe, AZ (United States); Zhejiang Univ. of Technology, Hangzhou (China)
  2. Arizona State Univ., Tempe, AZ (United States)
Publication Date:
Research Org.:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1473867
Grant/Contract Number:  
EE0007090
Resource Type:
Journal Article: 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.
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. doi:10.1063/1.4978674.
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. doi:10.1063/1.4978674. https://www.osti.gov/servlets/purl/1473867.
@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}
}

Journal Article:
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Works referenced in this record:

Very high-efficiency green organic light-emitting devices based on electrophosphorescence
journal, July 1999

  • Baldo, M. A.; Lamansky, S.; Burrows, P. E.
  • Applied Physics Letters, Vol. 75, Issue 1, p. 4-6
  • DOI: 10.1063/1.124258