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Tuning of Metal Work Functions with Self‐Assembled Monolayers
Author(s) -
de Boer B.,
Hadipour A.,
Mandoc M. M.,
van Woudenbergh T.,
Blom P. W. M.
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.200401216
Subject(s) - materials science , monolayer , self assembled monolayer , diode , polymer , optoelectronics , light emitting diode , phenylene , electrode , work function , current (fluid) , metal , poly(p phenylene vinylene) , nanotechnology , self assembly , electroluminescence , composite material , layer (electronics) , chemistry , engineering , electrical engineering , metallurgy
Work functions of gold and silver are varied by over 1.4 and 1.7 eV, respectively, by using self‐assembled monolayers. Using these modified electrodes, the hole current in a poly(2‐methoxy‐5‐(2′‐ethylhexyloxy)–1,4‐phenylene vinylene) light‐emitting diode is tuned by more than six orders of magnitude (see Figure). Suppression of the hole current enables measurement of the electron current in a polymer/polymer blend photovoltaic cell.