High contrast blue organic light-emitting diodes using inorganic multilayers of Al and ZnSe

High contrast blue organic light-emitting diodes using inorganic multilayers of Al and ZnSe

High contrast blue organic light-emitting diodes were fabricated using an inorganic multilayer of NPB (700 Å)/MADN (200 Å)/Alq3 (300 Å)/LiF (10 Å)/Al (70 Å)/ZnSe (300 Å)/Al (1000 Å). The optical and electrical characteristics were measured and compared to conventional organic light-emitting devices...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Optics letters 2012-12, Vol.37 (24), p.5235-5237
Hauptverfasser: Kim, You-Hyun, Lee, Sang Youn, Song, Wook, Meng, Mei, Wood, Richard, Mascher, Peter, Ryu, Dae Hyun, Kim, Woo Young
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Artificial intelligence
Energy bands
Multilayers
Organic light emitting diodes
Polarizers
Voltage
Zinc selenides
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:High contrast blue organic light-emitting diodes were fabricated using an inorganic multilayer of NPB (700 Å)/MADN (200 Å)/Alq3 (300 Å)/LiF (10 Å)/Al (70 Å)/ZnSe (300 Å)/Al (1000 Å). The optical and electrical characteristics were measured and compared to conventional organic light-emitting devices (OLEDs) and OLEDs with polarizers. OLEDs with the metal multilayer cathodes had an improved contrast ratio of 135∶1 compared to 104∶1 for OLEDs with polarizers. In addition, the multilayer OLEDs had a low turn-on voltage of 3.5 V due to energy band fitting of ZnSe with Al and the electron transport layer.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.37.005235