It is well known that poly(vinylidene fluoride) (PVDF) crystallizes in semi polymorphic crystalline forms of α, β, γ,-phases. The piezo- as well as pyroelectric properties of PVDF is strongly dependent on its β-crystalline phase. These features make it suitable for sensors and battery applications. Thin films of PVDF are widely used in recent thermal camera sensors. In this study, optimum β-crystalline phase of PVDF thin film can be produced easily via a single-step process by crystallization from gel states in the presence of corona fields. FTIR- spectroscopy investigations indicate high volume fraction of β-phases for such films. The measured pyroelectric coefficient of 33 ± 2 C/m²K exhibits a comparable result with those reported from conventionally obtained β- phase PVDF foils which requires complex treatments.

众所周知，聚偏二氟乙烯（PVDF）以α，β，γ相的半多晶型结晶形式结晶。PVDF的压电和热电特性在很大程度上取决于其β晶相。这些功能使其适用于传感器和电池应用。PVDF薄膜已广泛用于最近的热像仪传感器中。在这项研究中，PVDF薄膜的最佳β晶相可以很容易地通过一步法在存在电晕场的情况下从凝胶态结晶而制得。FTIR光谱研究表明此类薄膜的β相体积分数很高。测得的热电系数为33±2 C / m ²K显示出与需要常规处理的常规获得的β-相PVDF箔报道的结果相当的结果。