Stable and efficient blue and green organic light emitting diodes employing tetradentate Pt(II) complexes

Li, Guijie; Ameri, Lydia; Fleetham, Tyler; Zhu, Zhi-Qiang; Li, Jian

doi:10.1063/5.0033023

Stable and efficient blue and green organic light emitting diodes employing tetradentate Pt(II) complexes

Journal Article · Mon Dec 21 04:00:00 EST 2020 · Applied Physics Letters

DOI:https://doi.org/10.1063/5.0033023· OSTI ID:1848477

^[1]; Ameri, Lydia ^[2]; Fleetham, Tyler ^[2]; Zhu, Zhi-Qiang ^[2]; ^[2]

Arizona State University, Tempe, AZ (United States). Dept. of Materials Science and Engineering; Zhejiang University of Technology, Hangzhou, Zhejiang (People's Republic of China). College of Chemical Engineering; Arizona State Univ., Tempe, AZ (United States)
Arizona State University, Tempe, AZ (United States). Department of Materials Science and Engineering

PtON1-tBu and PtON6-tBu-doped blue organic light-emitting diodes (OLEDs) demonstrated estimated operational lifetimes LT₇₀ of 174 and 380 h at an initial luminance of 1000 cd/cm² with CIE coordinates of (0.188, 0.256) and (0.197, 0.309), respectively. Modifying the molecular structure of the lumiphore resulted in a PtON12-tBu-based green OLED, which realized an estimated operational lifetime LT₇₀ of 1410 h at an initial luminance of 1000 cd/cm² with CIE coordinates of (0.281, 0.559). These studies demonstrate that the tetradentate Pt(II) complexes bearing phenyl-pyrazole or benzopyrazole can act as stable phosphorescent emitters for the development of efficient and stable blue and green OLEDs.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Natural Science Foundation of China (NSFC); Provincial Universities of Zhejiang

Grant/Contract Number:: EE0007090

OSTI ID:: 1848477

Alternate ID(s):: OSTI ID: 1737701

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 25 Vol. 117; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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