Paper Title:
Preparation and Characterization of Organic Light Emitting Devices Using QD Dopant
  Abstract

Two types of the organic light-emitting devices (OLEDs) with different emission structures were prepared using Alq3 (aluminum tris 8-hydroxyquinoline) host material and quinacridone (QD) dopant at the emission layer. One is the OLED device with emission layer consisting of Alq3 host material doped with QD dopant ("codoped OLED"). The another one has a seperated QD dopant film in the Alq3 emission layer ("undoped OLED"). The maximum brightness of the codoped and undoped OLEDs were 3207 cd/m2 and 1570 cd/m2, respectively. The wavelength of the maximum emission peak in the undoped sample was 527 nm and shifted slightly toward longer wavelength with the value of 540 nm for the codoped OLED sample. The maximum luminous efficiency of the undoped OLED was about 1.4 lm/W and increased to 7.0 lm/W for the codoped sample.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
1021-1024
DOI
10.4028/www.scientific.net/MSF.449-452.1021
Citation
J. Y. Cho, H. J. Chang, "Preparation and Characterization of Organic Light Emitting Devices Using QD Dopant ", Materials Science Forum, Vols. 449-452, pp. 1021-1024, 2004
Online since
March 2004
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Price
$32.00
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