Enforced Effects of Bulky Side Groups and Side Group Substitution Position on OLED High Performance: How to Control Side Groups for Highly Efficient Blue Emitters?

  • Park, Young-Il (Department of Chemistry, The Catholic University of Korea) ;
  • Kim, Soo-Kang (Department of Chemistry, The Catholic University of Korea) ;
  • Jaung, Jae-Yun (Department of Fiber and Polymer Engineering, Hanyang University) ;
  • Park, Jong-Wook (Department of Chemistry, The Catholic University of Korea)
  • Published : 2009.10.12

Abstract

We report the EL property of blue and blue-violet emitting materials with anthracene moiety as well as a new core structure containing indenopyrazine. Non-doped device using one of indenopyrazine core derivatives was found to exhibit excellent blue-violet color purity of (0.173, 0.063), and narrow emission band of 42nm FWHM. One of anthracene core derivatives with bulky side group also exhibits excellent color coordinates (0.156, 0.088) and an external quantum efficiency of 7.18%.

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