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Proceedings Paper

Bright blue electroluminescence from Poly(N-vinylcarbazole) doped with two dyes
Author(s): Baijun Chen; Jingying Hou; Haiyan An; Shanhua Xue; Jingsong Huang; Shiyong Liu
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Paper Abstract

Electroluminescent (EL) devices were fabricated using Poly(N-vinylcarbazole) (PVK) doped with two high fluorescence blue dyes, 1,1,4,4-Tetraphenyl-1,3-butadiene (TPB) and 2,5-Bis(5-tert-buty 1-2-benzoxazoly) thiophene (BBOT) as an emitting layer, a layer of tris(8-quinolinolato aluminum (III) (Alq3) as an electron-transporting layer, and aluminum as the electron-injecting top electrode contact. The cell structure of glass substrate/ITO/doped PVK/Alq3/Al was employed. In this cell structure, electron and hole are injected from the aluminum electrode and positive polarity, respectively. Then transport into emitting layer and recombinate concomitant electroluminescence from the doped PVK layer. The EL device has a relatively low turn-on voltage of 4 V dc bias, and a luminance of 1200 cd/m2 were achieved at a drive voltage of 10 V. The blue emission peaking at about 455 nm and 475 nm.

Paper Details

Date Published: 3 October 1996
PDF: 3 pages
Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252981
Show Author Affiliations
Baijun Chen, Jilin Univ. Region (China)
Jingying Hou, Jilin Univ. Region (China)
Haiyan An, Jilin Univ. Region (China)
Shanhua Xue, Jilin Univ. Region (China)
Jingsong Huang, Jilin Univ. Region (China)
Shiyong Liu, Jilin Univ. Region (China)

Published in SPIE Proceedings Vol. 2897:
Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications
Manfred Eich; Bruce H. T. Chai; Minhua Jiang, Editor(s)

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