| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Novel Electrical Properties of Nanoscale Thin Films of a Semiconducting Polymer: Quantitative Current-Sensing AFM Analysis |
| 초록 |
Thin films of poly (o-anthranilic acid) with various doping levels, their topography and current-voltage (I-V) characteristics were quantitatively investigated using current-sensing atomic force microscopy. The films exhibited non-uniform current flows and I-V characteristics that depended on the doping level as well as on the film thickness. Films with a high doping level were found to exhibit Zener diode switching behavior, whereas the films with a very low doping level exhibited no current flow at all, and so are insulators. The films exhibited this novel and stable electrical bistability, can potentially be used in the fabrication of high-density, stable, high-performance digital nonvolatile memory devices based only on transistors. The measured current images and I-V characteristics indicate that the electrical switching and bistability of the films are governed by local filament formation and charge traps. |
| 저자 |
최승철1, 김지연1, 조신효1, 백성식2, 이동진3, 김오현3, 박수문1, 이문호1
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| 소속 |
1POSTECH 화학과, 2삼성전자, 3POSTECH 전기전자공학과 |
| 키워드 |
poly(o-anthranilic acid); electrical ON-OFF switching; filament formation; nanometer-scale charge traps; nanometer-scale analysis
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| E-Mail |
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