Anthracene Effects on Organic Light Emitting Diode Performance of Tetra-Substituted Ethylene Derivatives

Abstract

We synthesized new bluish-green and sky-blue emitting materials, 1,1,2,2-tetrakis(4′-tert-butylbiphenyl)ethane[TBBPE] and 1,1,2,2-tetrakis(4-(anthracen-9-yl)phenyl)ethene[TAPE]. TBBPE and TAPE film showed PL maximum value of 511 nm and 492 nm. TBBPE OLED device showed bluish-green C.I.E. value of (0.236, 0.412) and high luminance efficiency of 5.02 cd/A at 10 mA/cm². TAPE device also showed sky-blue C.I.E. value of (0.213, 0.323) and 3.17 cd/A at 10 mA/cm². It is found that TBBPE shows better luminance efficiency than TAPE and TAPE device exhibits relatively lower operating voltage and better C.I.E. value than TBBPE device.

Keywords:

• blue organic light-emitting diode
• electroluminescent
• McMurry reaction
• tetraphenylethylene

Acknowledgments

This work was supported by grant No. R01-2006-00010196-0 from the Basic Research Program of the Korea Science & Engineering Foundation.