Efficient excimer-based white OLEDs with reduced efficiency roll-off
Abstract
A tetradentate Pt(II) complex, Pt2O2-p2m, which exhibits both efficient monomer and excimer emission, was synthesized. Through rational device design to broaden the recombination zone, an OLED device employing Pt2O2-p2m demonstrated an impressively high peak external quantum efficiency (EQE) of 21.5% and a warm white emission with a color rendering index of 71 and Commission Internationale de L'Eclairage coordinates of (0.409, 0.458). Moreover, a reduced efficiency roll-off was also observed to retain high EQE values of 20% EQE at 1000 cd/m2 and 17% EQE at 5000 cd/m2, and an LT70 (time to 70% initial luminance) was estimated to be over 150 h at 1000 cd/m2 under constant operation at accelerated driving conditions.
- Authors:
-
[1]
- Arizona State University, Tempe, AZ (United States). Department of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Arizona State Univ., Tempe, AZ (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1848479
- Alternate Identifier(s):
- OSTI ID: 1766357
- Grant/Contract Number:
- EE0007090; EE0008721
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 118; Journal Issue: 7; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Physics; Colorimetry; Organic materials; Quantum efficiency; Potential energy surfaces; Optical metrology; Doping; Electroluminescent spectra; Electrochemistry; Nuclear magnetic resonance spectroscopy; Photochemistry
Citation Formats
Wu, Jiang, Ameri, Lydia, Cao, Linyu, and Li, Jian. Efficient excimer-based white OLEDs with reduced efficiency roll-off. United States: N. p., 2021.
Web. doi:10.1063/5.0043955.
Wu, Jiang, Ameri, Lydia, Cao, Linyu, & Li, Jian. Efficient excimer-based white OLEDs with reduced efficiency roll-off. United States. https://doi.org/10.1063/5.0043955
Wu, Jiang, Ameri, Lydia, Cao, Linyu, and Li, Jian. Fri .
"Efficient excimer-based white OLEDs with reduced efficiency roll-off". United States. https://doi.org/10.1063/5.0043955. https://www.osti.gov/servlets/purl/1848479.
@article{osti_1848479,
title = {Efficient excimer-based white OLEDs with reduced efficiency roll-off},
author = {Wu, Jiang and Ameri, Lydia and Cao, Linyu and Li, Jian},
abstractNote = {A tetradentate Pt(II) complex, Pt2O2-p2m, which exhibits both efficient monomer and excimer emission, was synthesized. Through rational device design to broaden the recombination zone, an OLED device employing Pt2O2-p2m demonstrated an impressively high peak external quantum efficiency (EQE) of 21.5% and a warm white emission with a color rendering index of 71 and Commission Internationale de L'Eclairage coordinates of (0.409, 0.458). Moreover, a reduced efficiency roll-off was also observed to retain high EQE values of 20% EQE at 1000 cd/m2 and 17% EQE at 5000 cd/m2, and an LT70 (time to 70% initial luminance) was estimated to be over 150 h at 1000 cd/m2 under constant operation at accelerated driving conditions.},
doi = {10.1063/5.0043955},
journal = {Applied Physics Letters},
number = 7,
volume = 118,
place = {United States},
year = {Fri Feb 19 00:00:00 EST 2021},
month = {Fri Feb 19 00:00:00 EST 2021}
}
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