Synthesis and Properties of Diphenylquinoxaline as Electron-Transporting Materials

Abstract:

Bis-(2,3-diphenylquinoxaline) (DDPQL) has been synthesized by condensation reaction with 3,3'-diaminobenzidine and benzil. The thermal and electrical properties of DDPQL were measured as well. Organic electroluminescent device using DDPQL as electron-transporting layer was fabricated. The structure of the organic electroluminescent device is ITO/α-NPD/ Alq/DDPQL/LiF/Al. The maximum brightness of the electroluminescent device at voltage of 13.5V is 12,100cd/m², the maximum current efficiency at voltage of 13.0V is 4.97cd/A, the external quantum efficiency is 1.92%, and the lowest drive-voltage is 3.5V. This indicates that the compounds are useful as electron-transporting materials in organic electroluminescent devices.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 183-188
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.183
• Online since: June 2011
• Authors: Ting Xi Li, Peng Sui, Su Su Gao, Na Kong, Sha Sha Wu, Shan Ting Li, Zhan Rui Niu
• Keywords: Amide Acylation Reaction, Bis-(2,3-Diphenylquinoxaline), Device, Electron-Transporting Material, Organic Electroluminescent Materi

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