Electronic processes in polyazomethine thin films
This paper is focused on thin films of various aromatic polyazomethines, undoped and doped with iodine and FeCl3, which are expected to be promising materials for organic electronics. Polyazomethine thin films have been fabricated by thermal vacuum evaporation (TVE) and chemical vapor deposition...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2009
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/58f95b9d563c49a0ba1a632567567888 |
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| Sumario: | This paper is focused on thin films of various aromatic polyazomethines, undoped and
doped with iodine and FeCl3, which are expected to be promising materials for organic electronics. Polyazomethine thin films have been fabricated by thermal vacuum evaporation
(TVE) and chemical vapor deposition (CVD) via the polycondensation process. The prepared
films, with a typical thickness of the order of 100 nm and smooth surfaces, appear to be considerably amorphous. The measured absorption and photoluminescence (PL) spectra are discussed in terms of the electronic structure of the materials of interest. In particular, the lowenergy spectra, related to transitions between the delocalized states, reveal the presence of the
vibronic progression. Additionally, the influence of the polymer chain structure and its conformation on the electronic structure of polyazomethine thin films is considered. Finally, the
relationship between the electronic processes occurring in polyazomethine thin films and their
potential applications is discussed.
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