Interfacial electronic structures of Ca/MEH-PPV/Au studied by one and two photon photoemission spectroscopy

Title
Interfacial electronic structures of Ca/MEH-PPV/Au studied by one and two photon photoemission spectroscopy
Author(s)
손영구
Keywords
PHOTOELECTRON-SPECTROSCOPY; METAL; SEXIPHENYL; BIPOLARON; POLYMERS
Issue Date
201401
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
VACUUM, v.99, pp.107 - 109
Abstract
Interfacial electronic structures and photoemission spectral characteristics of Ca/MEH-PPV/Au were studied by one and two photon photoemission spectroscopy. For a pristine MEH-PPV film, the work function was measured to be 4.0 eV. This value is 1.1 eV lower than that of a bare Au substrate. At a Ca coverage of 3 angstrom, the work function was sharply decreased to 2.6 eV. Upon further deposition, it was decreased to 2.3 eV, which is 0.6 eV lower than that of metallic Ca. CaO formation was revealed at the interface of Ca and MEH-PPV. (c) 2013 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33557http://dx.doi.org/10.1016/j.vacuum.2013.05.003
ISSN
0042-207X
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이과대학 > 화학생화학부 > Articles
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