Efficient, Color-Stable, and Long-Lived White Organic Light-Emitting Diodes Utilizing Phosphorescent Molecular Aggregates

Ameri, Lydia; Cao, Linyu; Tan, Xinqiang; Li, Jian

doi:10.1002/adma.202208361

Efficient, Color-Stable, and Long-Lived White Organic Light-Emitting Diodes Utilizing Phosphorescent Molecular Aggregates

Journal Article · Tue Jan 03 23:00:00 EST 2023 · Advanced Materials

DOI:https://doi.org/10.1002/adma.202208361· OSTI ID:2418045

Ameri, Lydia ^[1]; Cao, Linyu ^[2]; Tan, Xinqiang ^[2]; ^[2]

Arizona State Univ., Tempe, AZ (United States); OSTI
Arizona State Univ., Tempe, AZ (United States)

Highly efficient and stable single-stack hybrid white organic light-emitting diode (WOLED) devices are developed using two emissive layers: one with amber-colored phosphorescent molecular-aggregate emission from the Pd(II) complex, Pd(II) 7-(3-(pyridine-2-yl-κN)phenoxy-κC)(benzo-κC)([c]benzo[4,5]imidazo-κN)[1,2-a][1,5]naphthyridine, Pd3O8-Py5, and the other with blue fluorescence emission. Here, an optimized device structure achieves high color stability under various current densities, an external quantum efficiency (EQE) of 45.5%, a power efficiency of 97.4 Lm W^-1, and an estimated LT₉₅ (operational time to 95% of the initial luminance) of 50 744 h at an initial luminance of 1000 cd m^-2.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0008721

OSTI ID:: 2418045

Alternate ID(s):: OSTI ID: 1961866

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 11 Vol. 35; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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color stability
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Efficient, Color-Stable, and Long-Lived White Organic Light-Emitting Diodes Utilizing Phosphorescent Molecular Aggregates

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