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Polarized electroluminescence from bilayer structures
Author(s) -
Wang Geng,
Nešpůrek Stanislav,
Rakušan Jan,
Karásková Marie,
Schauer František,
Brehmer Ludwig
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200450855
Subject(s) - electroluminescence , bilayer , materials science , spin coating , layer (electronics) , irradiation , casting , anisotropy , coating , optoelectronics , optics , membrane , composite material , chemistry , biochemistry , physics , nuclear physics
The photoalignment ability of poly[methyl(phenyl)silylene] (PMPSi) films makes it possible to use them as hole‐transporting substrates for the preparation of organic oriented films. A PMPSi layer prepared by spin coating was irradiated, after drying, with linearly polarized UV light. Then, water‐soluble hydroxyaluminium phthalocyaninesulfonate [Al(OH)Pc(SO 3 Na) 1−2 ] was deposited by casting. The cell ITO/PMPSi/Al(OH)Pc(SO 3 Na) 1−2 /Al showed non‐linear current‐voltage characteristics. For applied voltages higher than 10 V, polarized electroluminescence was observed. Its spectral characteristic consisted of two peaks with maxima at about 320 and 700 nm; their polarized anisotropies R EL = Φ ∥ / Φ ⟂ were ca. 15 and 0.5, respectively.