| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Thermal Processing History Independent Ferroelectric Property of Poly(vinylidene fluoride-chlorotrifluoroethylene) |
| 초록 |
The previous studies have demonstrated that the reduction of Pr arises mainly from a preferred crystal orientation of the film which is ineffective for ferroelectric switching upon melting and recrystallization. It would be beneficial if one can develop a new ferroelectric polymer with relatively constant Pr regardless of thermal processing history as well as the types of its crystals. We investigated the molecular and microstructures of thin PVDF-CTFE) copolymer films. Microstructures of the films treated with the two different thermal histories supported the formation of β and α type crystals with sphere caps and micron level spherulites, respectively. PVDF-CTFE films with both α and β type crystals gave rise to relatively high remnant polarization of approximately 4 °C/cm2 in metal/ferroelectric/metal capacitors. In the case of FeFET devices, saturated hysteresis loops with the current ON/OFF ratio of approximately 103 at ±60V sweep and reliable data retention were measured. |
| 저자 |
김한기, 배인성, 박철민
|
| 소속 |
연세대 |
| 키워드 |
PVDF-CTFE; ferroelectric; FeFET; capacitor
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| E-Mail |
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