| 학회 | 한국재료학회 |
| 학술대회 | 2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 | 15권 2호 |
| 발표분야 | B. Nanomaterilas Technology(나노소재 기술) |
| 제목 | Microstructure-dependent elastic modulus of ferroelectric P(VDF-TrFE) thin films |
| 초록 | Ferroelectric polymers, especially polyvinylidene fluoride and its copolymer with trifluoro ethylene (P(VDF-TrFE)), finds their wide applications, ranging from sensors/actuators, transducers, to electromechanical and pyroelectric devices. In recent years, another emerging application of those ferroelectric polymers is for non-volatile memory devices, even in mechanically flexible forms. Thin film of P(VDF-TrFE), typically sub-micrometer in thickness, is applied for the ferroelectric memory application. Also, it is usual practice to crystallize the film by thermal annealing to get best device performance. Here, we measured the mechanical modulus of P(VDF-TrFE) thin films by buckling method, which is simple, easy, and suitable for the mechanical characterization of materials in thin film form. The measured mechanical modulus of P(VDF-TrFE) film increased as with the degree of crystallization, reaching maximum modulus value at the annealing temperature of ~120℃, then decreased at higher anneal temperatures. This buckling-based mechanical modulus measurement will be an invaluable help to the design and future implementation of non-volatile memory devices on flexible substrate. |
| 저자 | 함시우, 강달영 |
| 소속 | 연세대 |
| 키워드 | Ferroelectric non-volatile memory; P(VDF-TrFE); elastic modulus; crystallization |
