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Solution-processed multilayer OLEDs with wide bandgap host

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Abstract

In the present work, efficient Solution-processed green light-emitting diodes based on a phosphorescent emitter with wide bandgap host are reported. A maximum efficiency of 25 cd/A was obtained using the green emitter tris[2-(p-tolyl)pyridine]iridium(III) blended with diphenyl-4-triphenylsilylphenyl-phosphine oxide as the emission layer. The maximum luminance exceeded 10,000 cd/m2, indicating that by simply blending a wide bandgap host with a phosphorescent emitter, efficient electroluminescence with a simplified device structure can be obtained.

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Authors and Affiliations

  1. Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar, 47416-95447, Iran

    Vahid Fallah Hamidabadi, Ali Bahari & Nordin Mirnia

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  1. Vahid Fallah Hamidabadi
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  2. Ali Bahari
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  3. Nordin Mirnia
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Correspondence to Ali Bahari.

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Hamidabadi, V.F., Bahari, A. & Mirnia, N. Solution-processed multilayer OLEDs with wide bandgap host. Appl. Phys. A 126, 79 (2020). https://doi.org/10.1007/s00339-019-3267-4

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