本文利用m
面蓝宝石表面重构形成的纳米沟槽,诱导生长一维纳米棒和二维纳米薄膜的
PVDF-TrFE
,研究了其表面形貌特征,压电和铁电性质。结果显示纳米棒的长宽比可以达到
50
,通过施加不同正负电压,观察到单畴结构的翻转。并且相位与振幅滞回线分析证明相位翻转为
180˚
、
d*33
约
8 pm/V
。所得结果表明在纳米结构中
PVDF-TrFE
依然保持着较好的压电和铁电性质。
One-dimensional nanorods and two-dimensional nanofilms of PVDF-TrFE were prepared on reconstructed m-plane sapphire surface. The surface morphology, as well as piezo/ferroelectric properties of PVDF-TrFE, was studied. The results show that the aspect ratio of the nanorods can reach 50. By applying different voltages, the ferroelectric switching is observed in the single domain structure. In addition, the analysis of phase hysteresis loops and amplitude proves that the phase switching can reach 180˚ and the d*33 is about 8 pm/V. These results indicate that nanostructured PVDF-TrFE exhibits reasonable piezoelectric and ferroelectric properties.
通过1400℃高温退火,在蓝宝石(10-10)面自发有序的形成纳米沟槽结构,用其作为模板,成功制备了PVDF-TrFE一维纳米棒和二维纳米薄膜结构,并测试了其铁电与压电性质。通过模板的约束,诱导PVDF-TrFE在纳米沟槽内结晶生长,经过XRD表征,其衍射峰2θ为19.8˚证明是β相。经过PFM测试表明PVDF-TrFE纳米结构也具有良好铁电性与压电性,相位翻转为180˚,压电系数 d 33 * 约为8 pm/V。证明了在蓝宝石表面生长水平结构的PVDF-TrFE是可行的方案,为进一步的器件设计打下了基础。
文章引用
金荣强,吉彦达,樊济宇,杨 浩. 重构蓝宝石表面诱导PVDF-TrFE纳米结构及其性质研究Study on the Properties of PVDF-TrFE Nanostructures Induced by Reconstruction of Sapphire Surface[J]. 应用物理, 2018, 08(12): 529-535. https://doi.org/10.12677/APP.2018.812066
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