Efficient inverted organic light-emitting devices with self or intentionally Ag-doped interlayer modified cathode
Green phosphorescent inverted organic light-emitting devices (IOLEDs) with self or intentionally Ag-doped interlayer modified cathode were demonstrated. The IOLEDs show low driving voltage and high efficiency. For example, the efficiency of inverted bottom-emitting OLED with ITO cathode is comparabl...
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Veröffentlicht in: | Applied physics letters 2014-03, Vol.104 (9) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Green phosphorescent inverted organic light-emitting devices (IOLEDs) with self or intentionally Ag-doped interlayer modified cathode were demonstrated. The IOLEDs show low driving voltage and high efficiency. For example, the efficiency of inverted bottom-emitting OLED with ITO cathode is comparable with the conventional bottom-emitting OLED with ITO anode. The top-emitting IOLED with Ag cathode shows high current efficiency of 76.4 cd/A which is 2.38 times of that of the conventional bottom-emitting OLED with ITO anode. The results indicate that the electron injection from cathode was observably improved by the Ag-doped interlayer and such interlayer is cathode independent relatively. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.4868031 |