Solution-processed multilayer OLEDs with wide bandgap host

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-triphenylsilylphen...

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Veröffentlicht in:	Applied physics. A, Materials science & processing Materials science & processing, 2020, Vol.126 (1), Article 79
Hauptverfasser:	Hamidabadi, Vahid Fallah, Bahari, Ali, Mirnia, Nordin
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied physics Characterization and Evaluation of Materials Condensed Matter Physics Diodes Electroluminescence Emitters Energy gap Iridium Machines Manufacturing Materials Science Materials Science, Multidisciplinary Multilayers Nanotechnology Optical and Electronic Materials Organic light emitting diodes Phosphine oxide Phosphorescence Physical Sciences Physics Physics and Astronomy Physics, Applied Processes Science & Technology Surfaces and Interfaces Technology Thin Films
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Beschreibung
Zusammenfassung:	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/m 2 , indicating that by simply blending a wide bandgap host with a phosphorescent emitter, efficient electroluminescence with a simplified device structure can be obtained.
ISSN:	0947-8396 1432-0630
DOI:	10.1007/s00339-019-3267-4