Publications
Detailed Information
Efficient Blue Organic Light-Emitting Diodes using Newly Developed Pyrene-Based Electron Transport Materials
Cited 74 time in
Web of Science
Cited 79 time in Scopus
- Authors
- Issue Date
- 2009
- Publisher
- Elsevier
- Citation
- Org. Electron. 10 (2009) 163
- Keywords
- Blue OLED ; Degradation ; Pyrene-based electron transport material
- Abstract
- We synthesized new kinds of pyrene-based electron transport materials: 1,6-di(pyridin-3-
yl)-3,8-di(naphthalen-1-yl)pyrene (N1PP) and 1,6-di(pyridin-3-yl)-3,8-di(naphthalen-2-
yl)pyrene (N2PP). The external quantum efficiencies of the device with these electron
transport materials increase by more than 50% at 1 mA cm 2 compared with those of the
device with representative Alq3 as an electron transport material. The enhanced quantum
efficiency is due to a balanced charge recombination in an emissive layer. Electron mobilities
in N1PP and N2PP films are three times higher than that in Alq3. Highly enhanced
power efficiency is achieved due to a low electron injection barrier and a high electron
mobility. We find that the luminance degradation in the blue OLEDs is correlated with
the HOMO energy levels of electron transport materials.
- ISSN
- 1566-1199
- Language
- English
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.