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Tuning Of Metal Work Functions With Self‐Assembled Monolayers

B. Boer, A. Hadipour, M. M. Mandoc, T. V. Woudenbergh, P. W. Blom
Published 2005 · Materials Science

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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.
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