Solution-processed zinc tetrabenzoporphyrin thin-films and transistors
| Autor: | Noboru Ono, Patrick B. Shea, Jerzy Kanicki, Hiroko Yamada |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Metals and Alloys Analytical chemistry chemistry.chemical_element Nanotechnology Surfaces and Interfaces Zinc Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid chemistry Materials Chemistry Molecule Herringbone pattern Crystallite Absorption (chemistry) Thin film Monoclinic crystal system |
| Zdroj: | Thin Solid Films. 520:4031-4035 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2012.01.034 |
| Popis: | article i nfo Article history: Thin-films and organic field-effect transistors fabricated from a solution-processable precursor of zinc tetra- benzoporphyrin (ZnTBP) are reported. Amorphous, insulating precursor films were deposited by spin-casting and thermally converted into polycrystalline, semiconducting thin-films comprising grains on the order of 5 μm in diameter. Thin-film X-ray diffraction indicates a monoclinic unit cell with molecules arranged in a herringbone pattern, which in conjunction with optical and atomic force microscopy indicate a thin-film with grains comprised of randomly oriented ZnTBP aggregates. Optical absorption measurements display broad absorption with bands characteristic of a D4h symmetric porphyrin molecule. Organic field-effect transistors displayed field-effect mobilities on the order of 10 −2 cm 2 /V s and ON-/OFF-current ratios exceeding 10 2 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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