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Novel Peripherally Substituted Indolo[3,2‐ b ]carbazoles for High‐Mobility Organic Thin‐Film Transistors
Author(s) -
Li Y.,
Wu Y.,
Gardner S.,
Ong B. S.
Publication year - 2005
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.200401290
Subject(s) - transistor , carbazole , materials science , thin film transistor , organic semiconductor , electron mobility , thin film , optoelectronics , terrace (agriculture) , semiconductor , nanotechnology , layer (electronics) , organic chemistry , electrical engineering , chemistry , history , archaeology , voltage , engineering
Strategically functionalized 5,11‐dialkylindolo[3,2‐b]carbazoles (see Figure) represent a novel class of high‐mobility p‐channel semiconductors for organic thin‐film transistors. Specifically, 2,8‐dichloro‐substituted 5,11‐didodecylindolo[3,2‐b]carbazole, which forms highly crystalline films with large interconnecting terrace‐like layered domain structures, has exhibited mobilities reaching 0.14 cm 2 V –1 s –1 and current on/off ratios of 10 7 under ambient conditions.