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Proceedings Paper

Bisindolylmaleimides derivatives for effective EL materials
Author(s): Xiaochuan Li; Jiangshan Chen; Dongge Ma; Qiong Zhang; He Tian
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Paper Abstract

Two bisindolylmaleimide derivatives were prepared in good yields, characterized and successfully employed in the fabrication of organic light-emitting-diodes (OLEDs). The absorption spectra and photoluminescence spectra of the compounds in solution and in thin film were also measured and they show larger Stokes shifts (>100nm). With the electroluminescence devices configured as ITO/NPB/dopant:Alq3 /Alq3/LiF/Al, they exhibit yellow (A) and orange (B) color. In particularly, the two devices can be turned on at 5.2 V (device A) and 5.9V (device B), and reached the maximum brightness of 15066 and 8593cd/m2 at 21V, respectively. From the cyclic voltammetry and the onset absorption, the highest occupied molecule orbital (HOMO) and the lowest unoccupied molecule orbital (LUMO) energy levels can be estimated as A (5.3, 2.9eV) and B (5.4, 3.1eV).

Paper Details

Date Published: 12 January 2005
PDF: 8 pages
Proc. SPIE 5632, Light-Emitting Diode Materials and Devices, (12 January 2005); doi: 10.1117/12.600901
Show Author Affiliations
Xiaochuan Li, East China Univ. of Science and Technology (China)
Jiangshan Chen, Changchun Institute of Applied Chemistry (China)
Dongge Ma, Changchun Institute of Applied Chemistry (China)
Qiong Zhang, East China Univ. of Science and Technology (China)
He Tian, East China Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 5632:
Light-Emitting Diode Materials and Devices
Gang Yu; Chuangtian Chen; Changhee Lee, Editor(s)

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