We report a flexible, ultrathin, and compact poly(vinylidene fluoride)-based self-polarized piezoelectric nanogenerator via an expeditious quenching approach of the active layer. The appearance of the β phase of PVDF after quenching resulted in its applicability in energy harvesting. The employed organic solvents during the fabrication process contributed to the observance of the β phase, which is confirmed by X-ray diffraction and Fourier transform infrared spectroscopy. A two-step approach fabrication of the PVDF device showed exceptional performance, resulting in an open-circuit peak-to-peak voltage of 19.2 V upon human hand pressing and short-circuit current >0.7 μA. Also, the average d₃₃ value for the quenched PVDF film is observed to be −15.16 ± 5.81 pm/V. Further, charging of a capacitor and powering the liquid crystal displays (LCDs) are realized through the nanogenerator, thus validating mechanical energy conversion, storage, and powering applications.

中文翻译：

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基于原位极化超薄PVDF薄膜的柔性压电纳米发电机

我们报告了通过活性层的快速淬火方法的一种灵活，超薄和紧凑的聚偏二氟乙烯基自极化压电纳米发电机。淬火后PVDF的β相的出现导致其在能量收集中的适用性。在制造过程中使用的有机溶剂有助于观察到β相，这通过X射线衍射和傅里叶变换红外光谱法得到证实。采用两步法制造的PVDF器件表现出卓越的性能，在人手按下时短路电流峰峰值电压为19.2 V，短路电流> 0.7μA。另外，平均d ₃₃观察到，经淬火的PVDF薄膜的热阻值为-15.16±5.81 pm / V。此外，通过纳米发电机实现电容器的充电并为液晶显示器（LCD）供电，从而验证了机械能的转换，存储和供电应用。