Mingxin Yu, J. Duan, C. Lin
Sep 16, 2002
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Influential Citations
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Journal
Chemistry of Materials
Abstract
Diaminoanthracene derivatives 9,10-bis(1-naphthylphenylamino)anthracene (α-NPA), 9,10-bis(2-naphthylphenylamino)anthracene (β-NPA), 9,10-bis(m-tolylphenylamino)anthracene (TPA), and 9,10-bis(diphenylamino)anthracene (PPA) were conveniently synthesized from the corresponding diarylamine and 9,10-dibromoanthracene in the presence of Pd(OAc)2, tri-tert-butylphosphine, and sodium tert-butoxide in o-xylene. Electroluminescent devices using α-NPA, β-NPA, and PPA as the hole transporters and host emitters were made. Devices consisting of diaminoanthracene (α-NPA, β-NPA, or PPA)/Alq3 were shown to emit intensive green light from the diaminoanthracene layer instead of the Alq3 layer. The device performance can be further improved by employing CuPc as the hole-injection layer, α-NPB or m-MTDATA as the hole-transporting layer, and Alq3 or TPBI as the electron-transporting layer. Very high brightness, current, and power efficiencies and excellent CIE coordinates can be achieved by a suitable combination of these laye...