Preparation of polyacenic semiconductive thin films by excimer laser ablation
| Autor: | Hiroyasu Sato, Shinobu Kato, Hajime Kinoshita, Kazuyoshi Tanaka, Satoru Nishio, Tokio Yamabe, Akiyoshi Matsuzaki, Shizukuni Yata |
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| Rok vydání: | 1996 |
| Předmět: |
Morphology (linguistics)
Materials science Mechanical Engineering Metals and Alloys Analytical chemistry Substrate (electronics) Conductivity Condensed Matter Physics Electronic Optical and Magnetic Materials Mechanics of Materials Electrical resistivity and conductivity Materials Chemistry Pyrolytic carbon Thin film Pyrolysis Quartz |
| Zdroj: | Synthetic Metals. 83:67-71 |
| ISSN: | 0379-6779 |
| Popis: | Polyacenic semiconductive thin films (PAS-TFs) were prepared onto a quartz or a KBr substrate by excimer laser ablation at 308 nm of a bulk phenol-formaldehyde (PF) resin and the bulk of a PAS material which was obtained by heat treatment of the PF resin at 535 °C (pyrolytic PAS (535 °C)). These were homogeneous brown and/or dark brown thin films consisting of fine particles. The electric conductivities of the films thus prepared from PF resin and pyrolytic PAS(535 °C) were about 10 −8 and 10 −5 S cm −1 at room temperature, respectively. Remarkable increase of electric conductivities was achieved on increasing the substrate temperature during the deposition process. In particular, the conductivity of the film from pyrolytic PAS (535 °C) reached more than 10 −2 S cm −1 , which is comparable to that of bulk PAS material prepared by pyrolytic treatment at 775 °C, when deposited on a substrate at 300 °C. |
| Databáze: | OpenAIRE |
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