For the fabrication of pyroelectric polyvinylidene fluoride (PVDF) film with high performance, a novel method is presented which combines the usual two steps of solution casting and stretching into one. It demonstrates that a stretch ratio as large as 15 as well as low quantity of defects and high uniformity are achieved by this new technique. The characterization results reveal that baking temperature (T_b) after stretching has significant and similar influences on relative β-phase fraction (F_β), remnant polarization (P_r), dielectric constant and loss (ε′ and ε″) and pyroelectric coefficient of the samples; the highest pyroelectric coefficient, occurring at baking temperature of 80 °C without thermal poling, is 12.4 μC m⁻² K⁻¹, which is larger than that of the usually-stretched sample undergoing thermal poling. In addition, by using the prepared film as sensitive element, a novel chopperless pyroelectric infrared detector is constructed by electrostatically modulating the incident thermal irradiation; the measurement results demonstrate that the detector has excellent pyroelectric voltage response to the thermal radiation of the laser source and hot (warm) water with a sensitivity of 2.65 × 10⁴ V/W, showing its good potential for fully flexible infrared detector and temperature sensor.

为了制造高性能的热释电聚偏二氟乙烯（PVDF）薄膜，提出了一种新颖的方法，该方法将溶液浇铸和拉伸的通常两个步骤结合在一起。它证明了通过这种新技术可以实现高达15的拉伸比以及少量缺陷和高均匀性。表征结果表明，烘烤温度（Ť _b拉伸后）对相对β相馏分（显著和类似影响˚F _β），剩余极化（P _{- [R} ），介电常数和损耗（ε '和ε”）和样品的热电系数；在不进行热极化的情况下于80°C的烘烤温度下出现的最高热电系数为12.4μCm ^-2  K ^-1，比经过热极化的通常拉伸样品的热释电系数大。另外，以制备的薄膜为敏感元件，通过对入射热辐射进行静电调制，构建了一种新型的无斩波热释电红外探测器。测量结果表明，该探测器对激光源和热水（温水）的热辐射具有出色的热释电电压响应，灵敏度为2.65×10 ⁴  V / W，显示出其对于完全柔性的红外探测器和温度传感器的良好潜力。