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Synthesis and Hole-Transporting Properties of Various Bicarbazyl Derivatives

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Abstract:

This paper reports a new HTL material that has high glass-transition temperatures (Tg) and excellent thermal properties. The synthesized material was N,N-diethyl-3,3′-bicarbazyl (DEBC), N,N-diphenyl-3,3′-bicarbazyl (DPBC) and N,N-dinaphthyl-3,3′-bicarbazyl (DNBC). The device that used DPBC as HTL showed the highest efficiency of 4.95 cd/A and 2.22 lm/W at 10 mA/cm2. This is an improvement by more than 10% from the luminance efficiency of NPB, a commercialized material.

Keywords: CARBAZOLE; ELECTROLUMINESCENCE; GLASS-TRANSITION TEMPERATURE (TG); HOLE-TRANSPORTING; OLED

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2008.IC74

Publication date: 2008-09-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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