e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Conference -ISSS-8-
Structural Switching of Self-Assembled Monolayer by External Electric Field
Hiromasa FujiiKaori SasakiYusuke WakabayashiHiroo TajiriKazumoto MiwaShimpei OnoRyo Nouchi
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2018 Volume 16 Pages 76-78


Self-assembled monolayers (SAMs) are used for adjusting the work function of metal electrodes in organic devices. Since the energy level difference between the HOMO or LUMO and the work function affects the electron injection through the metal-organic interfaces, fine tuning of the work function is of importance. To control the work function from external environment, external large electric field on low-density SAMs is reported to be effective. In order to obtain a direct evidence for the structural switching of the SAM, X-ray reflectivity measurements were performed. The result shows that the molecular tilting of 10° is induced by the external voltage application. [DOI: 10.1380/ejssnt.2018.76]

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