Space-Charge-Mediated Anomalous Ferroelectric Switching in P(VDF鈥揟rEE) Polymer Films
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- 作者：Weijin Hu ; Zhihong Wang ; Yuanmin Du ; Xi-Xiang Zhang ; Tom Wu
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：November 12, 2014
- 年：2014
- 卷：6
- 期：21
- 页码：19057-19063
- 全文大小：389K
- ISSN：1944-8252
文摘
We report on the switching dynamics of P(VDF鈥揟rEE) copolymer devices and the realization of additional substable ferroelectric states via modulation of the coupling between polarizations and space charges. The space-charge-limited current is revealed to be the dominant leakage mechanism in such organic ferroelectric devices, and electrostatic interactions due to space charges lead to the emergence of anomalous ferroelectric loops. The reliable control of ferroelectric switching in P(VDF鈥揟rEE) copolymers opens doors toward engineering advanced organic memories with tailored switching characteristics.