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Work Function Independent Hole‐Injection Barriers Between Pentacene and Conducting Polymers
Author(s) -
Koch N.,
Elschner A.,
Rabe J. P.,
Johnson R. L.
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.200400697
Subject(s) - pentacene , materials science , work function , polymer , conductive polymer , substrate (aquarium) , work (physics) , thin film , nanotechnology , function (biology) , sulfonate , polymer substrate , chemical engineering , optoelectronics , composite material , thin film transistor , sodium , layer (electronics) , mechanical engineering , oceanography , evolutionary biology , geology , engineering , metallurgy , biology
The energy level alignment (see Figure) at interfaces between pentacene and thin films of conducting polymers (made from ethylenedioxythiophene and sulfonate moieties) is found to be independent of initial polymer work function or morphology. Interfacial chemical reactions control the energy level alignment, rather than just the pristine substrate work function.