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High‐Performance Solution‐Processable Poly( p ‐phenylene vinylene)s for Air‐Stable Organic Field‐Effect Transistors
Author(s) -
van Breemen A. J. J. M.,
Herwig P. T.,
Chlon C. H. T.,
Sweelssen J.,
Schoo H. F. M.,
Benito E. M.,
de Leeuw D. M.,
Tanase C.,
Wildeman J.,
Blom P. W. M.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200400445
Subject(s) - materials science , alkyl , alkoxy group , annealing (glass) , phenylene , transistor , field effect transistor , electron mobility , poly(p phenylene vinylene) , polymer chemistry , side chain , polymer , optoelectronics , conjugated system , organic chemistry , voltage , composite material , electrical engineering , chemistry , engineering
The influence of the substitution pattern (unsymmetrical or symmetrical), the nature of the side chain (linear or branched), and the processing of several solution processable alkoxy‐substituted poly( p ‐phenylene vinylene)s (PPVs) on the charge‐carrier mobility in organic field‐effect transistors (OFETs) is investigated. We have found the highest mobilities in a class of symmetrically substituted PPVs with linear alkyl chains (e.g., R 1 , R 2 = n ‐C 11 H 23 , R 3 = n ‐C 18 H 37 ). We have shown that the mobility of these PPVs can be improved significantly up to values of 10 –2 cm 2 V –1 s –1 by annealing at 110 °C. In addition, these devices display an excellent stability in air and dark conditions. No change in the electrical performance is observed, even after storage for thirty days in humid air.