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Low molecular weight and polymeric triphenylenes as hole transport materials in organic two‐layer LEDs
Author(s) -
Bacher Andreas,
Bleyl Ingo,
Erdelen Christian H.,
Haarer Dietrich,
Paulus Wolfgang,
Schmidt HansWerner
Publication year - 1997
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19970091307
Subject(s) - materials science , oled , layer (electronics) , optoelectronics , electron mobility , discotic liquid crystal , diode , light emitting diode , charge carrier , nanotechnology , liquid crystal
The benefits of using hexa‐alkoxytriphenylenes as hole transport materials for two‐layer light‐emitting diodes are reported. Both low molecular weight and polymeric triphenylenes are investigated. The polyacrylate shown in the figure is demonstrated to have excellent film‐forming properties and combines sufficient charge carrier mobility with good hole injection properties to make it a very suitable hole transport material.