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Proceedings Paper

White organic light-emitting diodes based on fluorescent dyes 7-diethylamino-3-(2-thienyl)chronmen-2-ylidene]-2,2-dicyanoviny-lamine
Author(s): L. Li; J. S. Yu; S. J. Yu; Y. D. Jiang
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Paper Abstract

White organic light-emitting diodes (OLEDs) were fabricated with red fluorescent dye [7-diethylamino-3-(2- thienyl)chronmen-2-ylidene]-2,2-dicyanoviny-lamine (ACY) by spin coating method, which used a mixture of poly(N-vinylcarbazole) (PVK) and ACY with various weight ratios. The spectra characteristics of different devices were studied and device performance was analyzed. The results demonstrated that optimum device performance could be obtained by choosing a concentration proportion of PVK : ACY at 1000 : 7. In EL spectra of this white OLED (WOLED) at 9 V, the red and green light emission from ACY and Alq3 were all observed. It was found that the ACY is a kind of material of energy transfer. The red fluorescence was emitted from ACY dopant, but energy was transferred from host material PVK. Also, weak concentration quenching was observed in the EL spectra of OLEDs.

Paper Details

Date Published: 25 November 2009
PDF: 6 pages
Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 750913 (25 November 2009); doi: 10.1117/12.838092
Show Author Affiliations
L. Li, Univ. of Electronic Science and Technology of China (China)
J. S. Yu, Univ. of Electronic Science and Technology of China (China)
S. J. Yu, Univ. of Electronic Science and Technology of China (China)
Y. D. Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7509:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration
Xuping Zhang; Wojtek J. Bock; Xuejun Lu; Hai Ming, Editor(s)

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