The Electroluminescent Devices Based on Benzoxazinone as Strong Fluorescent Material

Abstract:

The yellow-green fluorescent material 2-[2-(p-toluenesulphonylamino)phenyl]-4H-3,1- benzoxazin-4-one (TSPAPB) was synthesized by anthranilic acid and p-toluenesulphonyl chloride. Strong photoluminescent peaks were nearly at 530 nm. The fluorescence lifetime of solid powder was measured to be 6.47 ns by transient fluorescence spectrometer. HOMO and LUMO energy levels were calculated -4.92 and -1.61 eV. The multilayer yellow-green organic light-emitting devices (OLED) ITO/NPB/TSPAPB/BCP/TPBi or Alq3/LiF/Al were fabricated. Device A and B exhibited emissions at 576 nm with current efficiencies (CE) of 1.09 and 0.86 cd/A. The yellow-green electroluminescent peaks of Device C and D were at ca. 588 nm with current efficiencies of 0.94 and 0.68 cd/A, respectively. The characteristics of devices demonstrated that TSPAPB was a yellow-green emitter suitable for OLEDs.

• Periodical: Advanced Materials Research (Volume 380)
• Pages: 339-343
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.380.339
• Online since: November 2011
• Authors: Hui Pang, Wen Guan Zhang, Sheng Min Zhao
• Keywords: Benzoxazinone, Electroluminescent Device, Fluorescence, Non-Dopant, Yellow-Green

References

[1] Yeh Shijay, Chen Hungyang, Wu Minfei: Organic Electronics Vol. 7 (2007), p.137.

[2] Zhang Wenguan, Yang Lianming, Wang Wenguang, Jiang Hejin: Journal of Beijing Institute of Printing Vol. 4 (1996), p.17.

[3] Zhang Wenguan, Wang Yongsheng, He Zhiqun: Synthetic Metals Vol. 160 (2010), p.354.

[4] Zhang Wenguan, He Zhiqun, Mu Linping, Zou Ye, Zhao Shengmin: Dyes and Pigments Vol. 85 (2010), p.86.

[5] Huang Chunhui, Li Fuyou, Huang Wei: Introduction to organic light-emitting materials and devices (Fu Dan University Publications, China 2005).