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Title
Japanese: 
English:Characteristics of Asymmetric Amines as Wet-Type Anode Buffer Layer in Organic Light-Emitting Devices 
Author
Japanese: 飯田宏一朗, Kazuki Okabe, Futoshi Tanaka, Yan-Jun Li, 原 正彦.  
English: Koichiro Iida, Kazuki Okabe, Futoshi Tanaka, Yan-Jun Li, Masahiko Hara.  
Language English 
Journal/Book name
Japanese: 
English:Jpn. J. Appl. Phys. 
Volume, Number, Page Vol. 48        p. 050204
Published date May 2009 
Publisher
Japanese: 
English:The Japan Society of Applied Physics 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://jjap.ipap.jp/link?JJAP/48/050204/
 
DOI https://doi.org/10.1143/JJAP.48.050204
Abstract Two novel wet-processable asymmetric 1,4-phenylenediamine derivatives having the 9-phenanthryl groups (PHENs) were synthesized. The properties of PHENs doped with the electron acceptor tris(4-bromophenyl)aminium hexachloroantimonate (TBPAH) as the anode buffer layer were investigated in organic light-emitting devices (OLEDs). PHENs were treated with anisole to form homogeneous layers without crystallization by the wet process, and were effective for surface smoothing of the anode. Higher performance was obtained by annealing the doped layer owing to the high glass transition point (Tg, 155 °C), which indicated that the radical cation species possessed high stability at the temperature near its Tg.

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