Browse

Efficient Blue Organic Light-Emitting Diodes using Newly Developed Pyrene-Based Electron Transport Materials

Cited 68 time in Web of Science Cited 72 time in Scopus
Authors
Oh, Hyoung-Yun; Lee, Changhee; Lee, Seonghoon
Issue Date
2009
Publisher
Elsevier
Citation
Org. Electron. 10 (2009) 163
Keywords
Blue OLEDDegradationPyrene-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
URI
http://hdl.handle.net/10371/13612
DOI
https://doi.org/10.1016/j.orgel.2008.10.015
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse