Efficient fluorescent deep-blue and hybrid white emitting devices based on carbazole/benzimidazole compound

Xiaohui Yang, Shijun Zheng, Rebecca Bottger, HyunSik Chae, Takeshi Tanaka, Sheng Li, Amane Mochizuki, Ghassan E. Jabbour

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

We report the synthesis, photophysics, and electrochemical characterization of carbazole/benzimidazole-based compound (Cz-2pbb) and efficient fluorescent deep-blue light emitting devices based on Cz-2pbb with the peak external quantum efficiency of 4.1% and Commission Internationale dÉnclairage coordinates of (0.16, 0.05). Efficient deep-blue emission as well as high triplet state energy of Cz-2pbb enables fabrication of hybrid white organic light emitting diodes with a single emissive layer. Hybrid white emitting devices based on Cz-2pbb show the peak external quantum efficiency exceeding 10% and power efficiency of 14.8 lm/W at a luminance of 500 cd/m2. © 2011 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)14347-14352
Number of pages6
JournalThe Journal of Physical Chemistry C
Volume115
Issue number29
DOIs
StatePublished - Jun 30 2011

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials

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