Synthesis and Properties of 9,9′-Diaryl-4,5-diazafluorenes. A New Type of Electron-Transporting and Hole-Blocking Material in EL Device
- 9 February 2004
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 33 (3) , 276-277
- https://doi.org/10.1246/cl.2004.276
Abstract
The title compounds were prepared and investigated for electron-transporting and hole-blocking materials in organic electroluminescent (EL) devices. EL efficiencies of the phosphorescent devices indicated high performance of hole-blocking ability in the compounds. A maximum external efficiency of 18% was achieved and a maximum power luminous efficiency was over 45 Lm W−1.Keywords
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