The morphology and structure of vanadyl phthalocyanine thin films on lithium niobate single crystals
| Autor: | Alexandra J. Ramadan, Luke A. Rochford, Chris Mulcahy, Mary P. Ryan, Jonathan Moffat, Tim Jones, Sandrine Heutz |
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| Přispěvatelé: | Engineering & Physical Science Research Council (EPSRC) |
| Rok vydání: | 2016 |
| Předmět: |
Technology
Materials science Materials Science Inorganic chemistry Lithium niobate Materials Science Multidisciplinary 02 engineering and technology Substrate (electronics) 010402 general chemistry 01 natural sciences Physics Applied chemistry.chemical_compound Monolayer Materials Chemistry Molecule Thin film Science & Technology Physics MONOLAYERS General Chemistry 021001 nanoscience & nanotechnology Ferroelectricity 0104 chemical sciences Chemical engineering chemistry LAYER Physical Sciences Phthalocyanine 0210 nano-technology Layer (electronics) |
| Zdroj: | Journal of Materials Chemistry C. 4:348-351 |
| ISSN: | 2050-7534 2050-7526 |
| DOI: | 10.1039/c5tc03730a |
| Popis: | The electric field of ferroelectric materials has been used as a driving force to promote molecular adsorption and control the orientation of small dipolar molecules. This approach has not been investigated on larger polyaromatic molecules, such as those used in organic electronic devices, even though the physical and electronic properties of thin films are strongly dependent on molecular structure and orientation, ultimately affecting device performance. Here we investigate the effects of model ferroelectric surfaces on a dipolar organic semiconducting molecule. Thin films of vanadyl phthalocyanine (VOPc) deposited on to (0001) and (2[1 with combining macron][1 with combining macron]0) lithium niobate were subjected to structural and morphological analysis. Whilst thin films could be grown on these surfaces, no obvious change to their structure or morphology was observed suggesting there was no influence of a surface electrical field or surface chemistry on the film structure, and that the substrate is more complex than previously thought. |
| Databáze: | OpenAIRE |
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