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진공증착법을 이용한 P(VDF-TrFE) 공중합체 박막의 압전특성에 관한 연구

A Study on the Piezoelectric Characteristic of P(VDF-TrFE) Copolymer Thin Film by Physical Vapor Deposition Method

  • Park, S.H. (Stratigic Planning Dept., Unix Electronics)
  • 발행 : 2008.05.30

초록

본 실험은 P(VDF-TrFE) 공중합체 박막을 제조하고 압전특성을 검토하는데 있다. 또한 압전 특성 분석에서 압전 계수 $d_{33}$와 압전 전압 계수 $g_{33}$는 증착 온도가 $260{\sim}300^{\circ}C$ 까지는 32.3pC/N에서 36.28pC/N, $793{\times}10^{-3}V{\cdot}m/N$에서 $910.5{\times}10^{-3}V{\cdot}m/N$으로 증가하는 경향을 나타내었다. 이상의 실험 결과로 $300^{\circ}C$의 온도에서 P(VDF-TrFE) 공중합체 박막을 제조 할 때 최적의 특성이 나타남을 알 수 있었다. 반면에 증착온도가 $320^{\circ}C$에서 증착한 경우에는 각각 25.3pC/N, $680.3{\times}10^{-3}V{\cdot}m/N$으로 감소하였다.

In this research, the P(VDF-TrFE) copolymer thin films were prepared by the physical vapor deposition and studied to their piezoelectric properties. In the case of a specimen produced by varying the deposition temperature from $260^{\circ}C$ to $300^{\circ}C$, its piezoelectric coefficient($d_{33}$) increased from 32.3pC/N to 36.28pC/N, and piezoelectric voltage coefficient($g_{33}$) from $793{\times}10^{-3}V{\cdot}m/N$ to $910.5{\times}10^{-3}V{\cdot}m/N$. On the basis of these experimental results, we concluded that the P(VDF-TrFE) copolymer thin film prepared at $300^{\circ}C$ showed the optimum piezoelectric properties. At the deposition temperature of $320^{\circ}C$, its piezoelectric coefficient(d33) decreased 25.3 pC/N and piezoelectric voltage coefficient($g_{33}$) $680{\times}10^{-3}V{\cdot}m/N$.

키워드

참고문헌

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피인용 문헌

  1. Fabrication and characterization of ferroelectric multilayered films fabricated by using solvent blending vol.61, pp.9, 2012, https://doi.org/10.3938/jkps.61.1518
  2. Fabrication and Characterization of Ferroelectric Poly(Vinylidene Fluoride-Trifluoroethylene) (P(VDF-TrFE)) Thin Film on Flexible Substrate by Detach-and-Transferring vol.E95.C, pp.5, 2012, https://doi.org/10.1587/transele.E95.C.860